Bughunting

[Brown Betty]

I'm a big fan of calibre, but sometimes when I download metadata and reply "yes" to "update metadata in library?" it crashes without warning.

Running calibre with -v, I get

No bp log location saved, using default.
[000:012] Browser XEmbed support present: 1
[000:032] Browser toolkit is not Gtk2 (0).
[000:032] Using Xt toolkit
** (<unknown>:5413): DEBUG: NP_Initialize
** (<unknown>:5413): DEBUG: NP_Initialize succeeded
** (<unknown>:5413): DEBUG: NP_Initialize
** (<unknown>:5413): DEBUG: NP_Initialize succeeded
** (<unknown>:5413): DEBUG: NP_Initialize
** (<unknown>:5413): DEBUG: NP_Initialize succeeded
/build/buildd/icedtea-web-1.1~20110420/build/../plugin/icedteanp/IcedTeaNPPlugin.cc:2033: thread 0x9ed8538: Error: Invalid plugin function table.
** (<unknown>:5413): DEBUG: NP_Initialize
** (<unknown>:5413): DEBUG: NP_Initialize succeeded

Does this mean that a plugin I installed is causing the problem? If so, is there any way to tell which one?