I am running windows 10, and both basic and pro download about halfway, then I get the error message:

a problem occurred during installation

please try the following steps to see if it corrects the problem:

-restart computer

-restart the installation

I tried doing both and it keeps happening. then i click on more info (in the professional download) and it says:

Could not load file or assembly 'checksum, version=20.0 12.0, culture=neutral, publicKey Token=null' or one of its dependencies. the system cannot find the file specified