QUOTE (ontheair @ 23/12/2011, 9:20)

Just reinstalled "Fly the Maddog" after a complete deinstallation achieved with the Uninstall.exe provided
The manager & setup (Maddog_lm.exe v3.0.0.0) still gives me wrong figures. Example :
LFPG-EHAM/alter EHRD (11 nm)
distance to dest. 62109.4 nm
how does the LM compute the distance ? with the depart and arrival coords ? where can I check those coords are correct ?
what could be wrong/corrupted in the Maddog2008.ini file ?
Any assistance would be greatly appreciated
It could come from a corrupted Airac database.
The Maddog uses the same Database as the PMDG.
You may check the original PMDG files located in the FS root folder /FMCWP in FS9 (I don't know precisely for FSX).
Try to move the database content and database backup to another location, and reinstall the Airac 1113 for PMDG on a clean basis.
I guess the LM calculation is made from geographic coordinates. You can check it in the airports.dat file in FMCWP folder. Use notepad.
EHAM should be 52.308056 4.764167
LFPG 49.009811 2.547778