umptyphysics 
loaded image /usr/share/numptyphysics/paper.jpg
loaded log=0
active: 0
active: 1
STATS:	time=4098ms
	strokes=1 (0 paused, 0 undone)
saving demo of level 0 to /home/dreamon/.numptyphysics/Recordings//usr/share/numptyphysics/C00_Title/L00_title.npd
saving to /home/dreamon/.numptyphysics/Recordings//usr/share/numptyphysics/C00_Title/L00_title.npd
*** Error in `numptyphysics': munmap_chunk(): invalid pointer: 0x0000000001f1d740 ***
[1]    6390 abort (core dumped)  numptyphysics