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Scanner only shown with TWAIN 1.x DSM

Forums › TWAIN Classic › Scanner only shown with TWAIN 1.x DSM

  • This topic has 2 replies, 2 voices, and was last updated 7 years, 5 months ago by Eco.
Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
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  • August 7, 2013 at 1:16 pm #22876 Reply
    Eco
    Participant
    • Topics - 1
    • Replies - 1
    • Total Posts - 2

    Hello,

    i have a problem using a HP Scanjet 7650 with a TWAIN 2 application, the scanner is not available in the TWAIN scanner selection dialog. I’ve reproduced this behaviour with the twacker-tool from Twain.org, when i activate the usage of TWAIN 2.0, the scanner is not shown in the dialog. Setting twacker to twain 1, the scanner is shown and works.

    The problem occurs on a Windows 2003 server, using citrix terminal server.

    What i’ve already checked:
    – TWAIN_32 directory
    – twain.dll and twain32.dll files (Windows-directory)
    – twaindsm.dll (Windows-System32)
    – deleted TWAIN_32-directory from windows-user-dir
    – configure registry to ignore TWAIN_32 in user’s dir for the application

    What else could cause this behaviour and how can i solve it?

    Thank you for your help!

    Best regards

    August 7, 2013 at 3:47 pm #25965 Reply
    Kaij
    Participant
    • Topics - 9
    • Replies - 132
    • Total Posts - 141

    One question one the way to answer your question:

    Is Windows 2003 Server 32 bit or 64 bit?

    Best regards,
    Kaij

    http://www.jse.de

    August 16, 2013 at 7:43 am #25966 Reply
    Eco
    Participant
    • Topics - 1
    • Replies - 1
    • Total Posts - 2

    I’m not sure, i think, it is 32-bit.

    I found a similar problem in the citrix-forums: http://forums.citrix.com/thread.jspa?threadID=329678&tstart=15
    Seems to be a bug in the citrix-twain redirection when using version 2.x.

    Meanwhile we fixed the problem in our application via optional usage of the twain 1.x version interface.

    Thank you anyway for your answer.

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Viewing 3 posts - 1 through 3 (of 3 total)
Reply To: Scanner only shown with TWAIN 1.x DSM
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