FlightGear invalid line segment passed to IntersectVisitor::addLineSegment

[fanfantasy7]

the plane doesn't appear, And a lot of warning display on the terminal
[code]CullVisitor::apply(Geode&) detected NaN,
    depth=-nan, center=(0 0 0),
    matrix={
 nan nan nan nan
 nan nan nan nan
 nan nan nan nan
 nan nan nan nan
}

PT_vs_hpt: ran out of layers
Warning: invalid line segment passed to IntersectVisitor::addLineSegment(..)
         nan nan nan nan nan nan segment ignored..
[/code]
BUT FlightGear don't bug with --aircraft=ufo

with a new user (ubuntu)
i have launch [code]fgfs[/code] and don't bug
next
i have launch with scenery [code]fgfs --fg-scenery=/home/bertrand/FlightGear/Scenery/e000n40/[/code]
and the bug is back
next with [code]fgfs[/code] and bug again
sorry for my bad english, i am French
more on : https://answers.launchpad.net/ubuntu/+source/flightgear/+question/156676

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: flightgear 2.0.0-3
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sun Aug 21 11:41:40 2011
ExecutablePath: /usr/games/fgfs
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 LANGUAGE=fr:en_AU:en_CA:en_GB:en_NZ:en_US:aa:en
SourcePackage: flightgear
UpgradeStatus: Upgraded to natty on 2011-05-03 (109 days ago)
XsessionErrors:
 (firefox-bin:3639): Bonobo-WARNING **: Bonobo must be initialized before use
 (firefox-bin:4675): Bonobo-WARNING **: Bonobo must be initialized before use
 (firefox-bin:4675): Bonobo-WARNING **: Bonobo must be initialized before use

[Rebecca Palmer (rebecca-palmer)]

Comments in the linked question suggest this was fixed in 2.4 (current Ubuntu has 2.10), so I am closing this as fixed.

If you still have this problem in the current version, please reopen the bug (click Fix Released and change back to New), and specify what location/scenery triggers it.