I wanted to play a song mix on no player :-)
 
2005-09-30 13:32:50.5337 Backtrace:
 
   frame 0: Slim::Utils::Misc::assert (D:/slimskin/Slim/Player/Sync.pm line 415)
   frame 1: Slim::Player::Sync::masterOrSelf (D:/slimskin/Slim/Player/Source.pm 
line 1052)
   frame 2: Slim::Player::Source::streamingSongIndex (D:/slimskin/Plugins/
RandomPlay/Plugin.pm line 103)
   frame 3: Plugins::RandomPlay::Plugin::playRandom (D:/slimskin/Plugins/
RandomPlay/Plugin.pm line 375)
   frame 4: Plugins::RandomPlay::Plugin::handleWebMix (D:/slimskin/Slim/Web/
HTTP.pm line 760)
   frame 5: Slim::Web::HTTP::generateHTTPResponse (D:/slimskin/Slim/Web/HTTP.pm 
line 675)
   frame 6: Slim::Web::HTTP::processURL (D:/slimskin/Slim/Web/HTTP.pm line 536)
   frame 7: Slim::Web::HTTP::processHTTP (D:/slimskin/Slim/Networking/Select.pm 
line 115)
   frame 8: Slim::Networking::Select::select (slimserver.pl line 634)
   frame 9: main::idle (slimserver.pl line 578)
   frame 10: main::main (slimserver.pl line 1213)
 
Here's the problem. D:/slimskin/Slim/Player/Sync.pm, line 415:
 
405     # returns the master if it's a slave, otherwise returns undef
406     sub isSlave {
407             my $client = shift;
408             return undef unless $client;
409             return $client->master;
410     }
411
412     sub masterOrSelf {
413             my $client = shift;
414
415             assert($client);
416
417             return $client->master || $client;
418     }
419
420     sub isSynced {
421             my $client = shift;
422             return (scalar(@{$client->slaves}) || $client->master);
423     }
424
425     sub syncGroupPref {
 
Can't call method "master" on an undefined value at D:/slimskin/Slim/Player/
Sync.pm line 417, <SRC> line 456.
2005-09-30 13:32:50.6393 Shutting down plugins...