Hello,
I am developing a plugin (dissector) for wireshark and I got stuck at some 
point.
My plugin was (after a change) not loading for some reason, but I did not get 
any message about this (or the actual reason).
After delving in the wireshark code I stumbled upon wsutil/plugins.c
This piece of code is responsible for (loading) plugins, and should show an 
error dialog when loading failed:
report_failure("Couldn't load module %s: %s", filename,
                               g_module_error());
This error (dialog) is not showed in the (QT) UI...
I added 
g_log(NULL, G_LOG_LEVEL_WARNING, "Couldn't load module %s: %s",
                               filename, g_module_error());
and the (g_module_)error is shown on the command line.
I was planning to send this change as a patch, but I was wondering what went 
wrong with the original report_failure()..?
 * Is the UI not yet initialized when the plugins are loaded, so the failure is (silently) ignored?
 * It failure reporting broken in (QT) UI?
 * Something else?
Does anyone has thoughts about this? So a proper patch can be submitted.
If not, I can fire up gdb, so see what is happening, but take takes (quite 
some) time, which might unnecessary depending on the thoughts people might 
have on this subject.
For now I know the problem with my plugin, so I can continue with its 
development.
Regards,
  Maarten