windows 2000 user rights prevent me from scanning

[Stephane Gagnon]

I have a client who as a Canoscan LiDE 20 scanner. He's running
Windows 2000 with SP4, all updates installed. The scanner works really
well when an administrator is logged on, but as soon as a user with
lesser rights is signed on (let's say a Power user), it's not working
and it gives an error "U32SCAN TWAIN error. [T009]Error in getting
the first TWAIN data source. [T021]Unable to find the TWAIN source
manager [TWAIN_32.DLL]. Please copy the TWAIN_32.DLL file from your
source disk to your Windows folder. [T039]"

I did a search and found the file in the system32 folder as well as in
the windows folder. I also changed the permission for the user
affected on certain folders. I gave him Full access (read/write) on
the following folders/files:
windows\system32\twain_32.dll;windows\twain_32.dll;windows\twain_32.

I am using PhotoImpact 4.2 and reinstalled the drivers and software.
It really is problematic because I don't want to give the users admin
rights just for scanning.

I also contacted the Canon support, the only thing they told me was to
check the local security policy. I am not quite sure what to look at
there. I had a look but couldn't see anything reletive

Thanks in advance

 

[Guest]

I encountered essentially the same problem (another USB TWAIN scanner).
Check the permissions for the c:\ (root). There should be full access for
everybody (doesn't let them umproper access to the system though). When you
install Windows2000 (Pro), it is there. I usually removed it, and it worked
until I connected the scanner for girls (common users) to play with...
My problem was cured by restoring the full access to c:\ for everyone.

 

[Syed Abdullah]

Try and uninstall the program that you received when you
buy this scanner and re-install it!
Hope this works because I always get this problem!