Something's wrong with your setup, it works fine here.
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.
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.