Desperate for some help

I don't know what has gone wrong with my sim. Here is theproblem and some pics.I am still running under FS2002 and mainly use 5 aircraftpackages: DF737, EWATR, 767PIC, PSS & PMDG.After entering a FP on the FMC's of PSS747/777, 767PIC and PMDGthis is what it displays:PSS747 displays aircraft and runway correctlyPSS777 displays aircraft position OK but at opposite end of runway.767PIC displays aircraft position OK but runway at approx 30 degreeangle to the left.PMDG displays aircraft position OK but runway at approx 30 degreeangle to the left.After take off neither the PSS aircraft nor the PMDG will follow the FMC track when LNAV&VNAV engaged, bearing always to the left and away from it. 767PIC although showing runway incorrectly doesshow correct FMC track and will follow it when LNAV/VNAV engaged.The sim was working perfectly well until some days ago when I startednoticing these problems, I have reinstalled FS2002, all the aircraft packages current AIRAC for all of them. All to-no-avail.The DF737 & EWATR packages work just perfect.Grateful for any help on this matter, as I just don't know what todo anymore. Pictures attached which I hope will go some way to show what I mean.Thanks in advance.