At the risk of angering the moderators, I'm going to pose the question again:
Is md5stress supposed to work in Windows 7 with Nvidia cards?
>md5stress64 100
initializing random seed...
initializing opencl...
Error 0 in line 132
>md5stress32 100
initializing random seed...
initializing opencl...
Error 0 in line 132
Is there something were supposed to do to allow it to work?
Not likely. Nvidia supports OpenCL, but md5stress was certainly developed and tested on AMD, and likely needs some workarounds and such to work on Nvidia.
Something's wrong with your setup, it works fine here.
Code:
>md5stress64.exe 8
initializing random seed...
initializing opencl...
generating 71680 new random passwords + hashes...
Iteration: 0 / 8 on GPU #1...
Iteration: 1 / 8 on GPU #1...
Iteration: 2 / 8 on GPU #1...
Iteration: 3 / 8 on GPU #1...
Iteration: 4 / 8 on GPU #1...
Iteration: 5 / 8 on GPU #1...
Iteration: 6 / 8 on GPU #1...
Iteration: 7 / 8 on GPU #1...
Press any key to continue . . .
Windows 7 x64 + GTX Titan @ 347.25 ForceWare.
EDIT:
Talked to atom about your problem, it seems you did not have md5stress.cl in the directory, as 132 means the said file was not found.
Download
md5stress, extract everything in the same folder and try again.
Yes, now it works.
My usual practice after extracting a hashcat related archive is to keep the *64.exe, then delete the *32.exe, along with *.bin, *.sh, etc. That's why I also had deleted the *.h and *.cl, thinking they had something to do with the compiling, but not the actual execution.