It crashes probably of this native bittorrentlib.
I removed the libs and use this manual install:

Open a shell,


# create a basedir where all files go, e.g. WireShare6.0.2:
# this creates subdirs we need too in one step:
mkdir -p WireShare6.02/lib/img

#copy this files into WireShare6.0.2 base dir
WireShare.jar
runWireShare.sh
log4j.properties

#copy this Files in the specific subdirs:
WireShare6.0.2/lib/WShome.xml
WireShare6.0.2/lib/img/TPB.jpg
WireShare6.0.2/lib/img/WireShare-Logo.png
WireShare6.0.2/lib/img/blue_body_bg.png

#go to Folder WireShare6.0.2
#start it:
./runWireShare.sh


Now it runs without crashes but you have no torrent support.