I bought Acceleration two weeks ago and i got a pretty irritating problem. When i start FSX i get the following message:
We're sorry, An unexpected error occured which is preventing Product Activation from being completed.

ERROR CODE: 8-c0000006

Then i cant activate FSX Acceleration and i can only fly for 30 minutes. I need to fix this fast because im going to sit ATC for an event in FSX multiplayer tonight and i want to begin flying passenger jets again!