Im on windows and I downloaded the 32 bit.

It worked for several days then said. Contact vendor to open application.

It wont let me open it even though it worked for several days.

+ Activation failed.
        + The system cannot find the file specified. (Exception from HRESULT: 0x80070002)

Those are the 2 errors.

I redownloaded and now it says.

Application cannot be started. Contact the application vendor.