Quartus fatal error

Downloaded 30-daz free trial. I can open project in Quartus II but not much more than that.Whatever I tried application just shuts down.

Please help.

mj

*** Fatal Error: Access Violation at 0X670DAD23

Module: quartus.exe

Stack Trace:

0xdad22: QEventLoop::exit + 0x2 (QtCore4)

0x1005c: RtlFreeHeap + 0x12f (ntdll)

0x638ba: free + 0xcc (MSVCR90)

0x638d9: free + 0xeb (MSVCR90)

End-trace

Quartus II Version 11.0 Build 157 04/27/2011 SJ Full Version