Process:         Ardour3.bin [351]
Path:            /Applications/Ardour 3.5.308/Ardour 3.5.308.app/Contents/MacOS/Ardour3.bin
Identifier:      org.ardour.Ardour3
Version:         3.5.308 (3.5.308)
Code Type:       X86-64 (Native)
Parent Process:  launchd [135]
User ID:         501

Date/Time:       2014-04-25 20:10:23.412 +0200
OS Version:      Mac OS X 10.8.5 (12F45)
Report Version:  10

Interval Since Last Report:          5025501 sec
Crashes Since Last Report:           357
Per-App Interval Since Last Report:  604851 sec
Per-App Crashes Since Last Report:   50
Anonymous UUID:                      1D3C0801-40D7-3EA0-693D-C74151D860C1

Crashed Thread:  16

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

Application Specific Information:
Assertion failed: (cnt >= 0), function read_at, file ../libs/ardour/audioregion.cc, line 478.


Thread 0:: Dispatch queue: com.apple.main-thread
0   libsystem_c.dylib             	0x00007fff88d726a7 __mtx_droplock + 1
1   libsystem_c.dylib             	0x00007fff88d73165 pthread_mutex_unlock + 268
2   libglib-2.0.0.dylib           	0x000000010fbf3971 g_mutex_unlock + 17
3   Ardour3.bin                   	0x0000000109457f56 Glib::Threads::Mutex::Lock::~Lock() + 38
4   Ardour3.bin                   	0x00000001094f858a PBD::Signal0<void, PBD::OptionalLastValue<void> >::_connect(boost::function<void ()>) + 250
5   Ardour3.bin                   	0x000000010a59b8e3 PBD::Signal0<void, PBD::OptionalLastValue<void> >::connect_same_thread(PBD::ScopedConnectionList&, boost::function<void ()> const&) + 65
6   libpbd.dylib                  	0x000000010f3bed2b PBD::StatefulDiffCommand::StatefulDiffCommand(boost::shared_ptr<PBD::StatefulDestructible>) + 489
7