Jmonkeyplatform crashes very often


Is it just my machine or is jmonkeyplatform very unstable on Linux (Ubuntu 12.04)? It seems pretty much everything I do causes the jmonkeyplatform to crash.

I have used beta version and fresh version from SVN, no difference. Here is terminal output from one crash.

[exec] OGL: Enter showing state.

[exec] OGL: Ceased throttling update loop.

[exec] INFO [com.jme3.gde.core.sceneexplorer.SceneExplorerTopComponent]: New material listener for : models/plants/firtree/firtree-firtree_geom_2.j3m

[exec] EDT: componentResized 722, 365

[exec] The program ‘java’ received an X Window System error.

[exec] This probably reflects a bug in the program.

[exec] The error was ‘BadMatch (invalid parameter attributes)’.

[exec] (Details: serial 20170 error_code 8 request_code 140 minor_code 4)

[exec] (Note to programmers: normally, X errors are reported asynchronously;

[exec] that is, you will receive the error a while after causing it.

[exec] To debug your program, run it with the --sync command line

[exec] option to change this behavior. You can then get a meaningful

[exec] backtrace from your debugger if you break on the gdk_x_error() function.)

[exec] AL lib: ReleaseALC: 1 device not closed

[exec] Result: 1