I recently upgraded an application from Juce 1.21 to 1.38. After modifying here and there everything appears to run smoothly - but only appears. Lately, I’ve experienced mysterious crashes, not seen before the Juce upgrade. The following is a print of the relevant parts of the crash report (sorry about the “dump”). There are some other threads running, so this might be cause of stuff - but appearently not in the earlier Juce version. Any hints, similar experiences or stuff I should know about A complete fix perhaps…? 
-Thanks in advance!
Date/Time: 2006-11-15 14:53:10.221 +0100
OS Version: 10.4.8 (Build 8L127)
Report Version: 4
Command:
Path: /Applications//Contents/MacOS/
Parent: WindowServer [113]
Version: 1.0.3f445 (1.0.3f445)
PID: 688
Thread: 0
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_INVALID_ADDRESS (0x0001) at 0x14900a00
Thread 0 Crashed:
0 com.apple.CoreGraphics 0x9038cbb4 shape_intersect + 1100
1 com.apple.CoreGraphics 0x9038c6d4 CGSIntersectRegion + 156
2 com.apple.HIToolbox 0x93230c60 HIShapeCreateIntersection + 60
3 com.apple.HIToolbox 0x93231d0c HIView::BuildAggregateInvalidRegion(__HIShape*) + 256
4 com.apple.HIToolbox 0x93231c7c HIView::BuildAggregateInvalidRegion(__HIShape*) + 112
5 com.apple.HIToolbox 0x93231c7c HIView::BuildAggregateInvalidRegion(__HIShape*) + 112
6 com.apple.HIToolbox 0x93231b9c HIView::DetermineAreaToPaint(OpaqueGrafPtr*, unsigned long, __HIShape const*) + 52
7 com.apple.HIToolbox 0x933923a0 HIView::DrawComposited(short, OpaqueGrafPtr*, __HIShape const*, unsigned long, HIView*, CGContext*) + 168
8 com.apple.HIToolbox 0x934adbfc FlushWindowObject(WindowData*, void**, unsigned char) + 548
9 com.apple.HIToolbox 0x93223eac FlushAllWindows() + 204
10 com.apple.CoreFoundation 0x907dc73c __CFRunLoopDoObservers + 352
11 com.apple.CoreFoundation 0x907dc464 CFRunLoopRunSpecific + 244
12 com.apple.HIToolbox 0x93208740 RunCurrentEventLoopInMode + 264
13 com.apple.HIToolbox 0x93207d4c ReceiveNextEventCommon + 244
14 com.apple.HIToolbox 0x9330c940 ReceiveNextEventInMode + 72
15 de. 0x000b26d0 juce::juce_dispatchNextMessageOnSystemQueue(bool) + 68
16 de… 0x000a0aa4 juce::essageManager::dispatchNextMessage(bool, bool*) + 96
17 de. 0x000a0c74 juce::MessageManager::runDispatchLoop() + 36
18 de. 0x000a018c juce::JUCEApplication::main(juce::String&, juce::JUCEApplication*) + 612
19 de. 0x000a0470 juce::JUCEApplication::main(int, char**, juce::JUCEApplication*) + 132
20 de. 0x0000266c _start + 760
21 de. 0x00002370 start + 48
Thread 0 crashed with PPC Thread State 64:
srr0: 0x000000009038cbb4 srr1: 0x100000000000d030 vrsave: 0x0000000000000000
cr: 0x44002448 xer: 0x0000000000000000 lr: 0x000000009038c844 ctr: 0x0000000090003728
r0: 0x0000000000000200 r1: 0x00000000bffff350 r2: 0x0000000000000002 r3: 0x0000000000000000
r4: 0x0000000000000000 r5: 0x00000000bffff390 r6: 0x0000000000000001 r7: 0x00000000bffff394
r8: 0x0000000001203eaf r9: 0x00000000011f55d0 r10: 0x00000000011f55cc r11: 0x0000000044002482
r12: 0x0000000090003138 r13: 0x0000000000000000 r14: 0x00000000bffff394 r15: 0x00000000bffff390
r16: 0x0000000005200a00 r17: 0x00000000052666d8 r18: 0x0000000000000000 r19: 0x00000000011f55cc
r20: 0x0000000000000020 r21: 0x000000007fffffff r22: 0x00000000a038eef0 r23: 0x00000000011f5580
r24: 0x00000000052666e8 r25: 0x0000000000000000 r26: 0x0000000000000000 r27: 0x0000000014900a00
r28: 0x0000000005200a08 r29: 0x00000000011e7c9c r30: 0x00000000052666e8 r31: 0x000000009038c780
Model: PowerMac7,2, BootROM 5.1.5f2, 1 processors, PowerPC 970 (2.2), 1.8 GHz, 512 MB
Graphics: GeForce FX 5200, GeForce FX 5200, AGP, 64 MB
Memory Module: DIMM0/J11, 256 MB, DDR SDRAM, PC3200U-30330
Memory Module: DIMM1/J12, 256 MB, DDR SDRAM, PC3200U-30330
Modem: MicroDash, Euro, V.92, 1.0F, APPLE VERSION 2.6.6
Network Service: Built-in Ethernet, Ethernet, en0
Serial ATA Device: ST3160023AS, 149.05 GB
Parallel ATA Device: SONY DVD RW DW-U10A,
USB Device: USB-PS/2 Optical Mouse, Logitech, Up to 1.5 Mb/sec, 500 mA
USB Device: Hub in Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 500 mA
USB Device: Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 250 mA
FireWire Device: unknown_device, unknown_value, Unknown
FireWire Device: Konnekt24D, TC Electronic, Up to 200 Mb/sec