Twain Source Manager Problem

[Roland Pleger]

After I re-installed Windows95 the Twain Source Manager does not find
the Data source files (*.cs) of my applications (scanner, digital
camera)
any more -- even though the files "*.cs", twain*.dll and the folder
"twain*" are present.
When I try to import pictures via Twain I receive the message:
"no source found" and cannot address neither the scanner nor the digital
camera.

Do you have an idea what goes wrong?
Might there be an error in the registy (already cleaned by regclean.exe
without success)?

[Loretta & Greg Krisher]

Roland -

The data source file extension is ".ds", not ".cs"; I assume this is
what you meant. Are the "*.ds" files under the "TWAIN" or "TWAIN_32"
directories?

- Greg

[Bert Bug]

Thanks for asking!
Directory structure (after deleting twain files and reinstallation of
drivers):

directory windows
twain.dll
twain_32.dll
directory twain
directory qcam
twcam16.ds
directory twain_32
directory scan32
scanobj.ds + many xxx.dll files

Does Win95 knows that in twain directories are further subdirectories? If not
how the registry could be updated (regclean.exe did not help)?

[Loretta & Greg Krisher]

The TWAIN Data Source Manager searches for TWAIN data sources under the
\WINDOWS\TWAIN and \WINDOWS\TWAIN_32 directories, including any
subdirectories.

Can you provide any specifics about your problem? What application(s)
are you using, what is the exact sequence resulting in the error, what
is the exact text of the error, etc?

- Greg

[Roland Pleger]

I have no idea how to fix the problem (is there any tool by which twain components
can be tested individually).
I open any twain compatible application, eg. "paint shop pro". I select "import",
then "twain", then "select source". Now a window opens; in the past I could select
different sources (scanner, digital camera), now it is empty and I get the message
"no source available".

If I select "import" instead of "select source" I get an error message as well
("data error").

Any idea?

[Loretta & Greg Krisher]

Roland Pleger wrote:
> I have no idea how to fix the problem (is there any tool by which twain components
> can be tested individually).
> I open any twain compatible application, eg. "paint shop pro". I select "import",
> then "twain", then "select source". Now a window opens; in the past I could select
> different sources (scanner, digital camera), now it is empty and I get the message
> "no source available".
>
> If I select "import" instead of "select source" I get an error message as well
> ("data error").
>
> Any idea?

Are you running Windows 9x, or Windows NT?

I don't see anything wrong with the information you have provided; it
ought to work, as near as I can tell. You might try re-installing the
scanner and digital camera drivers. You might also try re-installing
the Data Source Manager, which can be downloaded from
www.twain.org/download.htm; select

"Download the 32bit Data Source Manager (Version: 1.6.0.3, Posted: March
15, 1999)"

under "32bit Data Source Manager (Win32s, Win95, and WinNT)".

- Greg

[Bob Avery H.......]

I cannot remember reinstalling Windows and not having to reinstall my scanning
applications to reestablish the links.

If all else fails, reinstall your scanning software application(s).

--
Cheers, BobH
"The fog comes on little cat feet. It sits looking over the harbor
and city on silent haunches and then moves on." -- Carl Sandburg "The City"

[Roland Pleger]

Operating system: windows95
I'll check the address you mentioned.

* Do you have any ideas how I can test the system? Eg. is it possible to run the Source
manager alone and to get an error message which is a little bit more informative than
"source not found"?

* Is it possible to address the "*.ds" files directly? It means: do I have a chance to
start my scanner with a stand alone program (it was shipped with Twain interface
software only)? Eg. "twaininput.exe" which ask for *.ds files and handles the input?

Thanks again for your remarks!

Roland

[Roland Pleger]

I reinstalled not only Windows95 but the Twain drivers as well. But I did not find an
option to deinstall the Twain related files properly (instead I deleted the files
manually before reinstallation)

Bob Avery H....... schrieb:

[Loretta & Greg Krisher]

In your WIN.INI file, there should be a [TWAIN] section. It probably
has one entry, "Default Source=yadayadayada", indicating the most
recently selected data source.

Add another entry to the [TWAIN] section: "Debug Mode=3". This will
cause the Data Source Manager to generate TWAIN.LOG in the WINDOWS
directory. The file logs TWAIN command activity. This MAY give some
indication of the problem.

You might also try subscribing to the TWAIN mailing list at
www.twain.org. This group is manned by some very experienced TWAIN
developers that may be able to solve your problem.

- Greg

[Roland Pleger]

(I already subscribed the newsgroup -- they gave me some hint how to program my interface by
myself...)

Thanks for the hint on the log file.

Can you interpret it (s.b.)?
Best regards
Roland

TWAIN_32.DLL - MESSAGE - CTwunk ::AppInitialize - Reset Log
TWAIN_32.DLL - MESSAGE - CTwunk ::OpenServer - Starting Thunker
TWAIN_16.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_16.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_16.DLL - MESSAGE - CTWTRACE--CONTROL, PARENT, OPENDSM
TWAIN_16.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_16.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 0, CC = 0)
TWUNK_16.EXE - MESSAGE - Twunk --WinMain - Posting Startup Complete To Twain
TWAIN_32.DLL - MESSAGE - CTwunk ::OpenServer - Serviced Message D249
TWAIN_32.DLL - MESSAGE - CTwunk ::OpenServer - Received Startup Complete From Thunker
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_16.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_16.DLL - MESSAGE - CTWTRACE--CONTROL, IDENTITY, GETFIRST
TWAIN_16.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_16.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 1, CC = 3)
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 0, CC = 0)
TWAIN_32.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_32.DLL - MESSAGE - CTWTRACE--CONTROL, IDENTITY, GETDEFAULT
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_16.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_16.DLL - MESSAGE - CTWTRACE--CONTROL, IDENTITY, GETFIRST
TWAIN_16.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_16.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 1, CC = 3)
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 1, CC = 3)
TWAIN_32.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_32.DLL - MESSAGE - CTWTRACE--CONTROL, IDENTITY, USERSELECT
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Discarded Message 200
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_16.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_16.DLL - MESSAGE - CTWTRACE--CONTROL, IDENTITY, GETFIRST
TWAIN_16.DLL - ERROR - Cmessngr--IMessenger - atol Failed
TWAIN_16.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 1, CC = 3)
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 3, CC = 0)
TWAIN_32.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_32.DLL - MESSAGE - CTWTRACE--CONTROL, PARENT, CLOSEDSM
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 3E4
TWAIN_32.DLL - MESSAGE - TwDdeCli::WaitForAsync... - Serviced Message 4CC
TWAIN_32.DLL - MESSAGE - CTwunk ::CloseServer - Posting Close To Thunker
TWAIN_16.DLL - MESSAGE - CTWTRACE--Paint Shop Pro(0) to NULL:
TWAIN_16.DLL - MESSAGE - CTWTRACE--CONTROL, PARENT, CLOSEDSM
TWAIN_16.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 0, CC = FFFF)
TWUNK_16.EXE - MESSAGE - Twunk --WinMain - Posting Shutdown Complete To Twain
TWAIN_32.DLL - MESSAGE - CTwunk ::CloseServer - Serviced Message D3E9
TWAIN_32.DLL - MESSAGE - CTwunk ::CloseServer - Received Shutdown Complete From Thunker
TWAIN_32.DLL - MESSAGE - DSM --DsmEntryDiagExit (RC = 0, CC = FFFF)