I recently purchased OFP. I patched from 1.2 to 1.3, then patched to 1.46
I've run into two problems. In single player mission, where I am instructed to steal a vehicle. I get to the vehicle, but it is invisible or is not actually at the waypoint, preventing me from finishing the mission.
In campaign, I begin training and get to the point where I"m to run down the "row" or something, which is basically the obstacle course. I run through the obstacles and get to the designated waypoint, but there is nothing to do there. I have re-run this, run it backwards and forward, but cannot pass the test, therefore rendering my campaign start useless.