See the thread at http://thread.gmane.org/gmane.games.flightgear.devel/77465 for
discussions.
After the split of the FGAddon repository from FGData, the sopwithCamel-YASim
aircraft would fail to start, instead showing a "FATAL" error. The problem was
the use of a relative path to ../Generic/ which no longer exists. Changing this
to Aircraft/Generic/ in the XML file fixes the path issue.
