[Mono-osx] crash with sigill after update...

[Vittorio G.]

Hello all,
I've been running and using mono on mac for a couple of months now and
it was pretty ok.
However after the latest Snow Leopard update (the security one) I'm
having this weird crash that i cannot debug in any way:

Exception Type:  EXC_BAD_ACCESS (SIGILL)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000475000
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   libSystem.B.dylib                   0x94829afa mach_msg_trap + 10
1   libSystem.B.dylib                   0x9482a267 mach_msg + 68
2   com.apple.CoreFoundation            0x99d6f2df __CFRunLoopRun + 2079
3   com.apple.CoreFoundation            0x99d6e3c4 CFRunLoopRunSpecific + 452
4   com.apple.CoreFoundation            0x99d6e1f1 CFRunLoopRunInMode + 97
5   com.apple.HIToolbox                 0x962b6e04
RunCurrentEventLoopInMode + 392
6   com.apple.HIToolbox                 0x962b6bb9 ReceiveNextEventCommon + 354
7   com.apple.HIToolbox                 0x962b6a3e
BlockUntilNextEventMatchingListInMode + 81
8   com.apple.AppKit                    0x94cc2595 _DPSNextEvent + 847
9   com.apple.AppKit                    0x94cc1dd6 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] + 156
10  com.apple.AppKit                    0x94c841f3 -[NSApplication run] + 821
11  com.apple.AppKit                    0x94c7c289 NSApplicationMain + 574
12  ???                                 0x028f967e 0 + 42964606
13  ???                                 0x028f947c 0 + 42964092
14  ???                                 0x004bc094 0 + 4964500
15  ???                                 0x004bc286 0 + 4964998
16  Terraria                            0x0000fa34 mono_jit_runtime_invoke
+ 164 (mini.c:5764)
17  Terraria                            0x001be768 mono_runtime_invoke +
137 (object.c:2755)
18  Terraria                            0x001c0f6a mono_runtime_exec_main +
669 (object.c:3939)
19  Terraria                            0x001c02a4 mono_runtime_run_main +
843 (object.c:3561)
20  Terraria                            0x000888cb mono_main + 7755
(driver.c:1856)
21  Terraria                            0x00001ed6 start + 54

(here is the full crashlog http://pastie.org/2753578 )

The very same code ran fine on 10.6.8 clean and is running fine on lion.
Any ideas? :)
Vittorio