videobuster error code 6024

[knalltuete]

pipelight 2.8.1
on mint 17
cinnamon
firefox 35: (process:11523): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
silverlight both 5 and 5.1
system check is ok except for missing libnetapi.so (must be due to the fact that the proper name is libnetapi.so.0 in the file but is irrelevant to the problem anyway)

www.videobuster.de: german vod guys
movie is loaded or attempted to get loaded, but then it says error code 6024 (in german)
actual meaning of code no.: restart computer and try again; but that doesn't do any good

thanks, regards, tb