Hi all, See attachments, same problem as original post 10May2010. As advised in the former post have installed the new Magdec.bgl but the problem is still there. Tried several variations of this route, i.e imported file from FSCom, re-inputting it using airways all to no avail. Keeps flying towards waypoints, but just as it approaches the them veers of to the left and then straightens out with an offset of approx 1-2miles to the left of the desired flight plan.

Hi all,for some reason did not attach file to first post - here it is. Regards JohnT

Hi all,as another poster has found. The resolution appears to be dis-enable all but basic FS Scenery and run the plane.I have since re-instated some of the scenery and all appears to be correct. No doubt the problem lies somewhere in some scenery not yet re-enabled. Anyhow scenery seems to be the cause, in my situation. Regards Johnt

Hi, problem appears to be some Middle Eastern scenery for Egypt HECA etc and some for DOHA. Though why that effects routes in Canada is beyond me. JohnT

I think I know what's causing your problem: You haven't upgraded to the PMDG 737 NGX

Try running the registry repair tool, free at Flight1.