Try downloading the accumulative update from the forum again while all these programs are disabled and not running. If you are using AVG you have to disable "resident shield" I believe its called, otherwise the download could be corrupted.
I did it again and again…same result. As soon as I use “Push & Start” or “Start only” PFE will interrupt as soon as I ask ground for clearance. The logfile is always telling that pfchat406 is missing.
With the “Push & Start” option off, it will run. Any more ideas???