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Hi. I am running More studio demo on IE-32 bit and it is working fine. Om IE-32 bit it gives exception SYSTEM32/TWAINDSM.dll (Windows 7 64 bit)
I did search the forum and I didn’t understand the clear instructions where to put the TWAINDSM file for 32 and 64 bits.
Also it doen’t clear for me how it is working at all since I run a global search for TWAINDSM.dll on my PC and didn’t find it. But it DOES work for 32 bit
Thank you
You can obtain TWAINDSM.dll in both 32bit and 64bit flavours here:
https://sourceforge.net/projects/twain-dsm/files/TWAIN DSM 2 Windows 32+64/32bit Windows
- TWAINDSM.dll from twain32 goes to WindowsSystem32
- TWAINDSM.dll from twain64 is not used
64bit Windows
- TWAINDSM.dll from twain32 goes to WindowsSysWOW64
- TWAINDSM.dll from twain64 goes to WindowsSystem32
The reason 32bit IE works fine even though you don’t have TWAINDSM.dll anywhere on your system is simple. Windows provides older TWAIN DSM in the form of twain_32.dll (Windows). This old DSM is used in case TWAINDSM.dll is missing, but it’s only available for 32bit applications. MS doesn’t include TWAINDSM.dll in their OSes, only twain_32.dll, and that means no 64bit TWAIN unless you install it yourself.
Another thing is that 32bit applications may only access 32bit data sources in Windowstwain_32 and 64bit applications only 64bit data sources in Windowstwain_64. And 64bit data sources are virtually nonexistent.