This error happens because jMonkeyEngine 3 (jME3) is unable to find the proper version of the lwjgl library on your system. Members of our development team have been able to fix it by removing the .jme3 directory from their home directories.
If you are a NiCE developer and can't find a .jme3 directory, the files may exist in a locally installed version of IBM Rational Software Architect, (/home/yourUser/IBM/SDP on Linux). Delete all of the lib*.so files from this directory except for libcairo-swt.so.