I've been messing with the preview dll in the OP; positioning weapons, adjusting FOV etc, but every time i left click to save the game freezes and sound loops. Tabbing out gives me an exception window.

Windows 7 32bit, directX up to date.

Exception details:

Code:
Source
Halo

Summary
Stopped working

Date
*30/*03/*2011 06:00

Status
Report sent

Description
Faulting Application Path:    C:\Users\alex\AppData\Local\Halo Custom Edition\haloce.exe

Problem signature
Problem Event Name:    APPCRASH
Application Name:    haloce.exe
Application Version:    1.0.8.616
Application Timestamp:    489a3b7e
Fault Module Name:    d3d9.dll
Fault Module Version:    2.0.0.1
Fault Module Timestamp:    4a984fec
Exception Code:    c000001d
Exception Offset:    0000781e
OS Version:    6.1.7601.2.1.0.768.3
Locale ID:    2057

Extra information about the problem
Bucket ID:    2375969051