Porting a cuda code in x64 on win32 No cuda function runs adny more...

Hello ,

I am developing a cuda program on Windows 7, with Visual Studio 2008.
I am working on 64 bits and everything works fine.
Yesterday, I wondered if it was easy to pass from 64 to 32 bits. I change the configuration settings, the paths to the libraries, the path to nvcc, etc.
The project compiles well, no error, no warning.
CudaInit works fine : it detects my GeForce GTX 275 but after that, no cuda functions work : they all return cudaUnknownError, even if a simple cudaMalloc.

If anyone had a lead to fix that, I’d be very greateful !