I am on the last mission of GTA 4 - Out of Commission (PC) and cannot finish due to the bug with getting on the helicopter. I have read some terrible hacks to get it to work e.g. use Fraps, but that doesn't even seem to work in all cases. Is there a definitive fix for this?
I don't know if they will ever fix this, but here's a list o things you can try, worked for me: