thx, for your reply boomer. I have 0.8.8.1 installed, in Ruuds website http://racer.nl/tutorial/animation.htm is writen that the skeleton animations are supported since 0.8.7 and as you see the modeler plays that anims with no problem, only exporting them works not (crashing).
Since it has never been seriously tested, you can expect problems like this.
I will try to make sure it work's in the following release.
Can you send me the files you used?