Hi there,I have an AMD 64 4400 dual core running nvidia graphics on XP64, with 2MB RAM. This is a fresh install of MSFS20004 with the update, FS Flightkeeper 2.7, ActiveSky 6, FDC 3.1 and RC v4. Every time I line up, and as soon as I put the power on everything freezes until I close RC.Before the install I found that there was a conflict with FDC and the wav files which I reported on this forum. I have turned off everything except the basics FDC but it won't go. As soon as I turn off RC everything goes fine even for an extended 10 hour flight.Ideas please RegardsNevillePS I don't have 4.01 if that makes any difference

there was an update to fdc, which i think fixed the problem.jd

Nope I already have that update, and as I said its fine as soon as I turn Radar contact off, so its not FDCregardsNeville

you may want to write to dave directly. not to long ago, someone had a similar issue, and nothing we did helped.then i got this in the email> Hello Gentlemen>> Great news...........Dave's interim version of the > FlightDeck_Companion.exe file has done the trick!!!! FDC 3.1 and RCV > 4.01 are now fully compatible on my system and function as they > should.>> I would like to take this opportunity to thank you guys for these > great programs and in particular the fantastic backup and support you > provide for the RC and FDC products..........it is very much > appreciated.>> Regards> Neil

Yes it fixed the problem.Thank you