TGE crash world editor

Hello, i'm new on the forum.
I purchased the indie version of torque and install it on my os x. When I open the Torque demo is ok. Enter to world editor is fine too but when it's time to play with terrain editor or terrain texture painter then the software freeze for 2 sec and crash with a report.
I'll try it on my winxp on the same computer and it works fine

Here's some specs of my computer:
Model: MacBook4,1, BootROM MB41.00C1.B00, 2 processors, Intel Core 2 Duo, 2.4 GHz, 2 GB
Graphics: kHW_IntelGMA965Item, GMA X3100, spdisplays_builtin, 144 MB with 2go ram

And here's a sample of the report:
Process: Torque Demo OSX [135]
Path: /Applications/Torque Game Engine 1.5.2 SDK/Torque SDK/example/Torque Demo

Date/Time: 2008-10-04 15:51:44.639 -0400
OS Version: Mac OS X 10.5.5 (9F33)
Report Version: 6

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000015179000
Crashed Thread: 1

Thread 1 Crashed:
0 ??? 0x1557e2eb 0 + 358081259
1 GLEngine 0x14920cf8 gleDrawArraysOrElements_IMM_Exec + 1080
2 com.garagegames.torquedemo 0x00089138 start + 549768
3 com.garagegames.torquedemo 0x000894a6 start + 550646

Can someone can help me please !