Fsbuild-2 Flight Planner

Hi all, maybe some of you old hands can help me here - I've just got started with FSBuild.

Data from the Aircraft folder BEFORE Build (Wt Units Kg):
Takeoff Gross Weight 129450 Flaps 5

And AFTER Build :
Takeoff Gross Weight -88581411 (that’s minus) Flaps 5
Landing Gross Weight 35476591 (in red) Flaps 30

Here's the aircraft config I put into fsb_Aircraft.cfg:

[B767-300 Level-D] -- (M.Bevington) adapted by Nico Kaan to Kilograms ---
WeightUnit=KGS // set to KGS
CallSign=BAW390 // set to my favorate callsign
PayloadWeight=40545 // match 767-300 Config Manager,
ReserveFuel=:45 // set as required (minutes or actual)
;AlternateFuel (below) can be forced in minutes or weight (not recommended)
AlternateFuel=
HoldFuel=:15 // set as required (minutes or actual)
ExtraFuel=:20 // set as required (minutes or actual)
TaxiFuel=82/min // 140 (lbs) per min at idle, 180 (lbs) is good average
ApproachFuel=644 // added after last waypoint, adjust as required
OperEmptyWeight=88905 // match Config manager
MaxTakeoffWeight=185068 // match Config Manager
MaxZeroFuelWeight=133942 // do NOT change
MaxLandingWeight=140616 // do NOT change
MaxFuelWeight=55662 // match Config manager
PerformanceData=B763_LDS_Lbs.PRF // do NOT change
ToldData=B763.tld // do NOT change
DefaultTOFlaps=5 // company SOP
DefaultLDGFlaps=30 // company SOP
ImageFile=LDS767.jpg // do NOT change
MaxCruise=41000 // do NOT change
ClimbFuelbias=0.0 // adjusted for LDS model 330,000 GRWT
CruiseFuelbias=2.4 // adjusted for LDS model at Mach 8.0
DescentFuelbias=0.0 // requires large change to see any effect

Any ideas out there?
Thanks
Geoff