I have Windows Vista Home Premium SP1 (32-bit) and am trying to run an old
OCR application. I run it in Win95 compatibility mode.

Most functions of the old application work in Vista, but it fails if I ask
it to acquire an image from the scanner. I am asked to select my twain
source, which I do (Samsung SCX4100), but then the scanner gives a couple of
grunts and a message box from Vista says "Twain.dll Client's 32-Bit Thunking
Server has stopped working". I close the box, am told to check for Windows
updates, and finally (when I try clicking around on the application) that
"NTVDM.EXE is not responding" and I have to close the application.

I have no alternative twain sources to try, just this scanner source.

The scanner works fine with other (modern) applications.

My c:\windows\twunk_32.exe is version 1.7.1.0 dated 2006/11/02. I believe
that it came with Vista.

I don't really know what is going on, but I assume that the application is
calling twunk_32.exe to handle the actual scanning. It looks to me as if
Vista has ways of running old applications like mine, involving twunk_32.exe
and NTVDM.EXE, but they are not working on my machine.

I would be grateful for any suggestions to fix this.

OCR programs tend to work closely with the OS. If this is a very old
application, it is probably not compatible with Vista and you will need
an up-to-date OCR program.


On 22/11/2009 03:03, Ciarán Ó Duibhín wrote:[color=blue]
> I have Windows Vista Home Premium SP1 (32-bit) and am trying to run an
> old OCR application. I run it in Win95 compatibility mode.
>
> Most functions of the old application work in Vista, but it fails if I
> ask it to acquire an image from the scanner. I am asked to select my
> twain source, which I do (Samsung SCX4100), but then the scanner gives a
> couple of grunts and a message box from Vista says "Twain.dll Client's
> 32-Bit Thunking Server has stopped working". I close the box, am told to
> check for Windows updates, and finally (when I try clicking around on
> the application) that "NTVDM.EXE is not responding" and I have to close
> the application.
>
> I have no alternative twain sources to try, just this scanner source.
>
> The scanner works fine with other (modern) applications.
>
> My c:\windows\twunk_32.exe is version 1.7.1.0 dated 2006/11/02. I
> believe that it came with Vista.
>
> I don't really know what is going on, but I assume that the application
> is calling twunk_32.exe to handle the actual scanning. It looks to me as
> if Vista has ways of running old applications like mine, involving
> twunk_32.exe and NTVDM.EXE, but they are not working on my machine.
>
> I would be grateful for any suggestions to fix this.[/color]

On Sun, 22 Nov 2009 03:03:20 -0000, Ciarán Ó Duibhín
<no.spam@thank.you> wrote:
[color=blue]
>I have Windows Vista Home Premium SP1 (32-bit) and am trying to run an old
>OCR application. I run it in Win95 compatibility mode.
>
>Most functions of the old application work in Vista, but it fails if I ask
>it to acquire an image from the scanner. I am asked to select my twain
>source, which I do (Samsung SCX4100), but then the scanner gives a couple of
>grunts and a message box from Vista says "Twain.dll Client's 32-Bit Thunking
>Server has stopped working". I close the box, am told to check for Windows
>updates, and finally (when I try clicking around on the application) that
>"NTVDM.EXE is not responding" and I have to close the application.
>
>I have no alternative twain sources to try, just this scanner source.
>
>The scanner works fine with other (modern) applications.
>
>My c:\windows\twunk_32.exe is version 1.7.1.0 dated 2006/11/02. I believe[/color]


Are you sure it`s Twunk_32.exe and not Twain ?


[color=blue]
>that it came with Vista.
>
>I don't really know what is going on, but I assume that the application is
>calling twunk_32.exe to handle the actual scanning. It looks to me as if
>Vista has ways of running old applications like mine, involving twunk_32.exe
>and NTVDM.EXE, but they are not working on my machine.
>
>I would be grateful for any suggestions to fix this.[/color]

Thanks, Dominic.

The reason I'm persevering with this old application - which hasn't been
developed or supported for well over 10 years - is that it is trainable to
recognize the non-Latin alphabet I'm working with. I've tried and failed to
train FineReader on the same alphabet. I don't know of any other OCR
application which is trainable from scratch on an alphabet.

I'm operating at present on Vista by using a modern application to scan the
pages to TIFF images, and using the old application to do the recognition on
the TIFFs. It would be a lot more convenient to have one application do
both parts of the work.

So I'm willing to spend some effort in getting the old app to talk to the
scanner, if someone can help me to understand and fix it, or can convince me
that it can't be fixed. In the second case, my best option may be to go
back to using it in Win95.

"Dominic Payer" <dcp@dcp.fsv.co.uk> wrote in message
news:udfRlD0aKHA.5608@TK2MSFTNGP05.phx.gbl...[color=blue]
> OCR programs tend to work closely with the OS. If this is a very old
> application, it is probably not compatible with Vista and you will need an
> up-to-date OCR program.[/color]

"Jim" wrote[color=blue]
> On Sun, 22 Nov 2009 03:03:20 -0000, Ciarán Ó Duibhín wrote:
>[color=green]
>>I have Windows Vista Home Premium SP1 (32-bit) and am trying to run an old
>>OCR application. I run it in Win95 compatibility mode.
>>
>>Most functions of the old application work in Vista, but it fails if I ask
>>it to acquire an image from the scanner. I am asked to select my twain
>>source, which I do (Samsung SCX4100), but then the scanner gives a couple
>>of
>>grunts and a message box from Vista says "Twain.dll Client's 32-Bit
>>Thunking
>>Server has stopped working".[/color][/color]

<cut>
[color=blue][color=green]
>>My c:\windows\twunk_32.exe is version 1.7.1.0 dated 2006/11/02. I believe[/color]
>
>
> Are you sure it`s Twunk_32.exe and not Twain ?
>[/color]

Thanks, Jim.

No I'm not sure about very much in this area. I'm just going by the Vista
error message "Twain.dll Client's 32-Bit Thunking Server has stopped
working", and the fact that "Twain.dll Client's 32-Bit Thunking Server" is
the file description of C:\Windows\twunk_32.exe. I'm sure twunk and twain
are related, but I don't understand exactly how.

Can you run it in Windows7 XPvirtual machine box?-->in Win95 Compatibility
Mode?
Should as slow as molasses, but if you're so addicted to antique software,
the only solution is to find equally antique OS for it.
Ecost.com has some seriously insanely priced desktops they're liquidating
$30-120 for a whole computer, put WindowsME or somethign old on it, and
try.... but hwere you get antique Windows is another problem.....

"Ciarán Ó Duibhín" <no.spam@thank.you> wrote in message
news:evqRXJ8aKHA.4688@TK2MSFTNGP06.phx.gbl...[color=blue]
> So I'm willing to spend some effort in getting the old app to talk to the
> scanner, if someone can help me to understand and fix it, or can convince
> me that it can't be fixed. In the second case, my best option may be to
> go back to using it in Win95.[/color]

Sorry if I missed it earlier, but how is this scanner connected the
computer? USB, parallel, serial, SCSI, etc.?

- Bill

"Ciarán Ó Duibhín" <no.spam@thank.you> wrote in message
news:evqRXJ8aKHA.4688@TK2MSFTNGP06.phx.gbl...[color=blue]
> Thanks, Dominic.
>
> The reason I'm persevering with this old application - which hasn't been
> developed or supported for well over 10 years - is that it is trainable to
> recognize the non-Latin alphabet I'm working with. I've tried and failed
> to train FineReader on the same alphabet. I don't know of any other OCR
> application which is trainable from scratch on an alphabet.
>
> I'm operating at present on Vista by using a modern application to scan
> the pages to TIFF images, and using the old application to do the
> recognition on the TIFFs. It would be a lot more convenient to have one
> application do both parts of the work.
>
> So I'm willing to spend some effort in getting the old app to talk to the
> scanner, if someone can help me to understand and fix it, or can convince
> me that it can't be fixed. In the second case, my best option may be to
> go back to using it in Win95.[/color]

You may be better off finding a used XP Pro system - I regularly see these
for under CDN$150 - and using that for the scanner. Share the output
folder.

You can waste a lot of time coming to the conclusion that an old piece of
software just won't work properly under a newer OS. If your time has any
value at all, a used, dedicated machine can be *cheaper*.

HTH
-pk
[color=blue]
>
> "Dominic Payer" <dcp@dcp.fsv.co.uk> wrote in message
> news:udfRlD0aKHA.5608@TK2MSFTNGP05.phx.gbl...[color=green]
>> OCR programs tend to work closely with the OS. If this is a very old
>> application, it is probably not compatible with Vista and you will need
>> an up-to-date OCR program.[/color]
>[/color]

"Patrick Keenan" <test@dev.null> wrote in message
news:OlScL$%23aKHA.1596@TK2MSFTNGP06.phx.gbl...[color=blue]
> "Ciarán Ó Duibhín" <no.spam@thank.you> wrote in message
> news:evqRXJ8aKHA.4688@TK2MSFTNGP06.phx.gbl...[color=green]
>> Thanks, Dominic.
>>
>> The reason I'm persevering with this old application - which hasn't been
>> developed or supported for well over 10 years - is that it is trainable
>> to recognize the non-Latin alphabet I'm working with. I've tried and
>> failed to train FineReader on the same alphabet. I don't know of any
>> other OCR application which is trainable from scratch on an alphabet.
>>
>> I'm operating at present on Vista by using a modern application to scan
>> the pages to TIFF images, and using the old application to do the
>> recognition on the TIFFs. It would be a lot more convenient to have one
>> application do both parts of the work.
>>
>> So I'm willing to spend some effort in getting the old app to talk to the
>> scanner, if someone can help me to understand and fix it, or can convince
>> me that it can't be fixed. In the second case, my best option may be to
>> go back to using it in Win95.[/color]
>
> You may be better off finding a used XP Pro system - I regularly see these
> for under CDN$150 - and using that for the scanner. Share the output
> folder.
>
> You can waste a lot of time coming to the conclusion that an old piece of
> software just won't work properly under a newer OS. If your time has any
> value at all, a used, dedicated machine can be *cheaper*.
>
> HTH
> -pk
>[color=green]
>>
>> "Dominic Payer" <dcp@dcp.fsv.co.uk> wrote in message
>> news:udfRlD0aKHA.5608@TK2MSFTNGP05.phx.gbl...[color=darkred]
>>> OCR programs tend to work closely with the OS. If this is a very old
>>> application, it is probably not compatible with Vista and you will need
>>> an up-to-date OCR program.[/color]
>>[/color]
>
>[/color]
You might try this program's trial to see if you can get it to work. I has
OCR scanning and runs well on my Windows Vista 64-Bit system.
[url]http://www.hamrick.com/[/url]

Thanks for that idea, Bill, that was something I never even thought of.

The connection is USB. My printer/scanner has a parallel port, but my Vista
computer hasn't. So I moved the printer/scanner and old app temporarily to
an XP machine, where I had the choice of USB or parallel connection. There
I found, however, that the result does not depend on whether I use USB or
parallel connection.

In XP, using a "modern" application (IrfanView), an image can be scanned
successfully. But using my old app, the scanner window does not popup (to
let me set resolution etc), the scan does however take place, but ends with
"Lead error: Data format not supported". So the process of scanning an
image in the old app goes further in XP than in Vista, but the problem is
there in XP too.

"Bill Leary" wrote...[color=blue]
> Sorry if I missed it earlier, but how is this scanner connected the
> computer? USB, parallel, serial, SCSI, etc.?[/color]

"Ciarán Ó Duibhín" <no.spam@thank.you> wrote in message
news:O$57aSkbKHA.2164@TK2MSFTNGP02.phx.gbl...[color=blue]
> Thanks for that idea, Bill, that was something I never even thought of.
>
> The connection is USB. My printer/scanner has a parallel port, but my
> Vista ((..omitted..))
> I found, however, that the result does not depend on whether I use USB or
> parallel connection.[/color]

Ah, too bad. If it worked parallel, and your computer had a parallel port,
I was going to suggest running XP or ME or 95 or whatever in a Virtual PC
session. VPC can access your parallel port, but can't get at the USB one.
And you could share a folder between between VPC and the host system. I did
this, briefly, with my older scanner after I upgraded my computer from ME to
Vista. The scanner, however, had other problems so I eventually just
replaced it with one that was supported by Vista directly.

- Bill

On Sun, 22 Nov 2009 03:03:20 -0000, Ciarán Ó Duibhín
<no.spam@thank.you> wrote:
[color=blue]
>I have Windows Vista Home Premium SP1 (32-bit) and am trying to run an old
>OCR application. I run it in Win95 compatibility mode.
>
>Most functions of the old application work in Vista, but it fails if I ask
>it to acquire an image from the scanner. I am asked to select my twain
>source, which I do (Samsung SCX4100), but then the scanner gives a couple of
>grunts and a message box from Vista says "Twain.dll Client's 32-Bit Thunking
>Server has stopped working". I close the box, am told to check for Windows
>updates, and finally (when I try clicking around on the application) that
>"NTVDM.EXE is not responding" and I have to close the application.
>
>I have no alternative twain sources to try, just this scanner source.
>
>The scanner works fine with other (modern) applications.
>
>My c:\windows\twunk_32.exe is version 1.7.1.0 dated 2006/11/02. I believe
>that it came with Vista.
>
>I don't really know what is going on, but I assume that the application is
>calling twunk_32.exe to handle the actual scanning. It looks to me as if
>Vista has ways of running old applications like mine, involving twunk_32.exe
>and NTVDM.EXE, but they are not working on my machine.
>
>I would be grateful for any suggestions to fix this.[/color]


Can your OCR program work with files instead of dealing directly with
the scanner? If so, use you newer scanning programs that work and
scan the documents to TIFF files. The use your OCR program to do it's
thing on the TIFF files. I have done this several times over the
years to do OCR when for whatever reason I was not able to do the scan
directly from the OCR program. Most OCR programs will not only read
the TIFF files but if you put them in a directory together (for multi
page documents) it will open the next sequentially numbers TIFF file
and do successive pages that way.

"Ashton Crusher" wrote[color=blue]
> Can your OCR program work with files instead of dealing directly with
> the scanner? If so, use you newer scanning programs that work and
> scan the documents to TIFF files. The use your OCR program to do it's
> thing on the TIFF files. I have done this several times over the
> years to do OCR when for whatever reason I was not able to do the scan
> directly from the OCR program. Most OCR programs will not only read
> the TIFF files but if you put them in a directory together (for multi
> page documents) it will open the next sequentially numbers TIFF file
> and do successive pages that way.[/color]

Thanks for replying. Yes, it can do that, and that is what I am having to
do at present.