padshop working off and on

I am am using windows 10 64 bit system but 32 bit Sonar X3. I can add padshop pro both vst2 and 3 to a project and it works fine, but when I close and reopen the project it crashes Sonar.
I have tried re-install but the same problem.
It has been suggested that moving the ASIO Steinberg Driver folder might help - how do I do this, would this work?
Any other ideas?