I can't build VSTO solution in 64bits windows

I'm developing an Add-in for PowerPoint 2010.

If I try to build it with plataform target Any CPU or x64 I get HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)

My solution uses a hardware dll provided in a SDK and one of its libraries . I have already registered it with regsvr32.

I had similar problems before and always solved with regsvr32 but now it does not work.

I can avoid this problem building in x86 but when I try to run debug or release build in x86 I get the given assembly name or codebase was invalid. HRESULT: 0x80131047

I don't know what to do.

Thanks