What Windows DLL’s does Twain require

[rainbm]

I’m not sure if I’ve posted this in the right forum, appologies if it should be in the TWAIN Drivers index…

I think that I may have removed a Windows DLL required by TWAIN by uninstalling a device and and chosing “yes” to the warning that some elements might be shared.. or something like that.

I had a webcam installed that worked fine after some difficulty installing it. I lent the cam to my parents for a long time and lot of intervening history in terms of additions to my PC. This is all rather a long time ago, so difficult to remember. I subsequently tried to use the camera again and had problems getting it working, I think giving up in the end.

Since then, when using HP Image Zone and Photoshop I have got an error popup wind message on start up. I have since tried to install another webcam and can’t do it.

It’s a small window with Digital Camera TWAIN Driver as it’s title and a red cross and the message “Resource DLL not Found” in the window.

If I remove the device’s directory from the C:/Windows/Twain_32 directory, neither program then sees the device and I don’t get the error message (even though the device is still “installed” in the device manager)

In the device manager properties for the device I get “This device cannot start. (Code 10)” Device is a pretty shitty Medion digital camera and microsoft’s support site me:

Code 10
If the device has a FailReasonString value in its hardware key, that string appears as the error message. The driver or enumerator puts this registry string value there. If there is no FailReasonString in the hardware key, you receive the following error message:

This device cannot start. (Code 10)

So it looks to me, excuse me if I’m getting the terminology wrong here, that the TWAIN layer has a dependency on a windows DLL, specific to digital cameras because my scanner still works fine) that I have somehow managed to delete, but I’m at a complete loss as to how to find out which one, if that is indeed the problem.

Any suggestions?

Thanks,
Mark

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