c++ shell extension - can't register on 32-Bit

I've created a C++ Shell Context Menu Extension using this Template.

On 64-Bit computers, it works great, but I can't register it on 32-Bit computers. Even the unmodified original version of the project does not work.

I know that I have to set the target to Win32, and then compile it.

Does somebody know why I can't register it?

The error message is:

The module "fmshell32.dll" failed to load. Make sur开发者_运维技巧e the binary is stored at the specified path or debug it to check for problems with the binary or dependent .DLL files. The specified module could not be found.

I tried to register it using

regsvr32 extension.dll

I tried it on a 32-bit computer and I used the 32-bit dll.