Unity 3.4 Crashing on OSX

I get this crash on OSX when I change i scenes, but I don’t know what it means.

Can anybody shed some light on what the problem might be?

Thanks,

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   ???                           	0x1efa91aa 0 + 519737770
1   ???                           	0x1efa9341 0 + 519738177
2   libmono.0.dylib               	0x00a9cc28 mono_jit_runtime_invoke + 1149
3   libmono.0.dylib               	0x00be435c mono_runtime_invoke + 133
4   ... Sum of the Forgotten Minds	0x006eacf2 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 4991380
5   ... Sum of the Forgotten Minds	0x0070a4f3 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 5120405
6   ... Sum of the Forgotten Minds	0x0070dcca PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 5134700
7   ... Sum of the Forgotten Minds	0x0070e09a PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 5135676
8   ... Sum of the Forgotten Minds	0x0070e3e1 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 5136515
9   ... Sum of the Forgotten Minds	0x00876eba PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 6613852
10  ???                           	0x1efa8fb2 0 + 519737266
11  ???                           	0x1efa8f6e 0 + 519737198
12  ???                           	0x1efa89a7 0 + 519735719
13  ???                           	0x1e2c3105 0 + 506212613
14  ???                           	0x05febce1 0 + 100580577
15  libmono.0.dylib               	0x00a9cc28 mono_jit_runtime_invoke + 1149
16  libmono.0.dylib               	0x00be435c mono_runtime_invoke + 133
17  ... Sum of the Forgotten Minds	0x0070d824 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 5133510
18  ... Sum of the Forgotten Minds	0x0070e01a PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 5135548
19  ... Sum of the Forgotten Minds	0x005fd627 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 4018889
20  ... Sum of the Forgotten Minds	0x006c82e0 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 4849538
21  ... Sum of the Forgotten Minds	0x00885f26 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 6675400
22  com.apple.Foundation          	0x93d2e5b1 __NSFireTimer + 282
23  com.apple.CoreFoundation      	0x95697a6b __CFRunLoopRun + 8059
24  com.apple.CoreFoundation      	0x956953f4 CFRunLoopRunSpecific + 452
25  com.apple.CoreFoundation      	0x95695221 CFRunLoopRunInMode + 97
26  com.apple.HIToolbox           	0x91a4ad60 RunCurrentEventLoopInMode + 392
27  com.apple.HIToolbox           	0x91a4ab17 ReceiveNextEventCommon + 354
28  com.apple.HIToolbox           	0x91a4a99c BlockUntilNextEventMatchingListInMode + 81
29  com.apple.AppKit              	0x97f20595 _DPSNextEvent + 847
30  com.apple.AppKit              	0x97f1fdd6 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 156
31  com.apple.AppKit              	0x97ee21f3 -[NSApplication run] + 821
32  com.apple.AppKit              	0x97eda289 NSApplicationMain + 574
33  ... Sum of the Forgotten Minds	0x00887372 PxcCombineBarycentric(PxcVector const, PxcVector const, PxcVector const, float, float) + 6680596
34  ... Sum of the Forgotten Minds	0x0001bb76 0x1000 + 109430
35  ... Sum of the Forgotten Minds	0x0001ba9d 0x1000 + 109213

Please submit a bug report with the steps and files to reproduce the crash.