So, 0.8.3 also crashes? Does it crash if you use another style apart from 
oxygen? e.g. plastique? QtCurve?

Widget style doesn't seem to make any difference (oxygen; plastique; phase); 
nor does window decor (oxygen; plastik)

Hmmm... Odd. I've seem some crashes with Oxygen, but only when starting with 
either the playlist of wikipedia views. And again, oly with Oxygen.

Does the start-up view matter in your case?

Not sure, why - but it looks as if the animated showing of the message widget 
was causing crashes for me. I've disabled this in trunk. Can you update and see 
if that helps you? (It probably wont, seeing as you were having issues with 
other styles...)

OK, so I had a play and it appears that (1) the start-up view doesn't appear to 
matter; (2) disabling the animation doesn't make any difference :(

Thanks for following this up.

As I said, didn't think it'd fix your issue :-)

Any chance you could run cantata in gdb, and get a backtrace? Cantata is a 
'KUniqueApplication', so when you run it under gdb you need to pass the 
--nofork parameter. e.g.

    gdb ./cantata
    (gdb) run --nofork

...wait for crash, then type 'where'

Done.  But not very informative, I'm afraid -- the majority of the time,
the behaviour is consistent with my second description above: the
systray icon appears (and playback can be controlled from there), but I
can't open a window.  I can't seem to get cantata to crash at present(!)

Sorry about the vacillating reports.  Hard to pin down what's happening...

Can you try starting with a blank config? I think this might be related to 
https://code.google.com/p/cantata/issues/detail?id=137 - where the KDE version 
of Cantata cannot be restored from the system tray.

Have you updated to trunk? Or are you still running 0.9? Issue 137 is fixed in 
trunk, and the 0.9 branch, I was just waiting a little while longer before 
releasing 0.9.1...

OK.  I thought I'd updated to trunk, but had in fact only applied the patch in 
1744 on 0.9.0 (long story; apologies).  1749 wouldn't compile for me so updated 
to 1744 and retested.  It now 1744 appears to be working fine (if you trust my 
testing with an irate toddler bashing the keys :)).

Many apologies for wasting your time.

Oops! Fixed KDE compile as of r1750 - sorry!

So, no crashes in r1744? Shall I mark this as fixed?

No crashes as yet.  I think it's fixed.  Thanks!  (And for the great
client).

Marking as fixed. If the issue occurs with 0.9.1 (which I'm about to release), 
then please open a new bug report.