first you must build guitarix with the --debug flag
(./waf configure
 [options] --debug )
 then run
 gdb guitarix
 (type run the on the gdb prompt).
 Try to load a ladspa plug-in into guitarxi, when guitarix crash, type
 backtrace
 Hopefully I get a information from the backtrace were exactly guitarix
 crashed.
 greets
 hermann
 
Ran a backtrace, attached the output.
Jeremy