Hi All,For about a month now, I have been having problems with my PMDG 737NG aircraft's ability to follow a heading that either I give it in the MCP or that is programmed into my FMC. When the LNAV / VNAV is turned on the aircraft will fly at an angle to the magenta line, when the heading hold is engaged, it is flying in a straight line, however, according to Vatsim ATC I am 20-50 degrees off of assigned heading. I have been forced to end my vatsim flight and try to fix this reoccuring problems many, many tmes now. This is what I have done to try and fix the problem - 1. Run Registry Edit by Flight1 (I ran s administrator and still not working)2. Uninstall My PMDG 737NG Aircraft3. Buy The Latest FSUIPC Version ( Version 3.99 | Also have installed the key that goes with it, bought off of Simmarket(.)com )I would really love some help here, as this aircraft is just about the only plane that I fly on fight simulator. Also, I cannot file another flight to the virtual airline that I fly for, untl this has been fixed.Thank You So Much For Your Time Reading,- SWAPilot785

Hi,Please sign your real name to your posts per forum rules.This definitely is the registry problem - the plane can't find the sim's magnetic variation data because it doesn't have a valid registry path.Try using the TweakFS registry fix tool here - that's worked for some people when the Flight1 one doesn't - same rules apply, make sure you run it as Admin.http://www.tweakfs.com/store/free_tools.php

Hi,Please sign your real name to your posts per forum rules.This definitely is the registry problem - the plane can't find the sim's magnetic variation data because it doesn't have a valid registry path.Try using the TweakFS registry fix tool here - that's worked for some people when the Flight1 one doesn't - same rules apply, make sure you run it as Admin.http://www.tweakfs.c.../free_tools.php

Thanks very much, I will give it a go and will also try to do BWI - MCI tonight lol- Ryan Ficklin

Hi,Please sign your real name to your posts per forum rules.This definitely is the registry problem - the plane can't find the sim's magnetic variation data because it doesn't have a valid registry path.Try using the TweakFS registry fix tool here - that's worked for some people when the Flight1 one doesn't - same rules apply, make sure you run it as Admin.http://www.tweakfs.c.../free_tools.php

Also, After I have ran the registry fix, do I have to restart my computer, because so far nothing has happened?- Ryan Ficklin

Also, After I have ran the registry fix, do I have to restart my computer, because so far nothing has happened?- Ryan Ficklin

Always good to restart after changing stuff!

Always good to restart after changing stuff!

Ok, thanks!- Ryan Ficklin