I finally got it to work! (r0tt's method didn't quite work for me, but definately steered me in the right direction). Due to the fact that Apple & Windows are not compatable the error 2 occurs.
After follow r0tt's instructions, I still had same problem, but he/she steered me in the right direction...
step 1 - Download the Install, saving to your desktop (rather than running it)
step 2 - Once completed, disconnect from internet
step 3 - Disable both Windows Defender AND YOUR ANTIVIRUS PROGRAM (might be
overkill but i got tired & disabled all & everything)
step 4 - click on icon on desktop & "run"
This cleared up my problem & hopefully yours. BUT REMEMBER BEFORE YOU RECONNECT TO INTERNET!... TO SET ALL THE ABOVE TO DEFAULT (or whatever you had as custom settings)