When I select the Rick Piper Vickers Viscount the engines rise to full power but the aircraft does not move. To check out the problem I switched to the MATS Super Constellation and that too does not move. The jets are all OK. I have checked this 5 times and uninstalled and re-installed FS 2004 just to make sure there is not a simple error. All to no effect. Any ideas as to what is happening and how I can fix it?
Interpreter