Studio's "Readme File" can be found by going to: Start / All Progs / Either Studio (Your Version Number) or Pinnacle Studio 12. The Readme covers a few of the answers to questions Posted on the Forum.
In the same Location you'll also find Studio Help, which is the same as the Hard Copy User Manual. There's also an "electronic" Help within the Programme.
In the Troubleshooting section of all of the above, you'll find many more answers to questions Posted in the Forum. Some of these have been gleaned from Fixes Posted in the Forum. There appear to be new ones in the S12 Manual.