A strange thing happened on the way to start the 1.81 game.
I saw my CF cursor in the upper left corner and no start up music at the Load Game Screen for OSP.
I discovered that if I moved my mouse as if I had the cursor controlled - to the upper left corner and did a Left Click, the CF cursor came on-line and the music started playing.
With everything that could go wrong, this is not a big problem, but could be confused as a OSP game hang up or bug.
Most of the little things that happen in OSP can be worked through on your own.
Several of my so-called bugs were fixed by reinstalling the 1.81 program over itself two or three times. Seems that some of the "copy" functions are slower than the buffer.
If you have many errors and can't get the program to run, re-install with the Mod Manager without deleting the previous try. If it works for you, great. If not, you can always post it in the forum and have someone either help you or laugh with/at you.