Cross crashes on Startup [Solved]

Ok guys, I need your help.
After this thread Cross crashes on startup. All it says is "Cross has stopped working". Checking the Event Viewer I see only:
Looking up this fault code seems to suggest it is some kind of Access Violation. No real idea what that means.
I've uninstalled all U46 drivers and Cross software, restarted, re-installed and this has not resolved the problem.
Anyone have any ideas, or am I looking at a complete Windows 7 re-install?
After this thread Cross crashes on startup. All it says is "Cross has stopped working". Checking the Event Viewer I see only:
Faulting application name: Cross.exe, version: 1.5.2.0, time stamp: 0x4d74ea4d
Faulting module name: Cross.exe, version: 1.5.2.0, time stamp: 0x4d74ea4d
Exception code: 0xc0000005
Fault offset: 0x0022a6f6
Faulting process id: 0x98c
Faulting application start time: 0x01cbfbae6a59abe0
Faulting application path: C:\Program Files\MixVibes\Cross 1.5.2\Cross.exe
Faulting module path: C:\Program Files\MixVibes\Cross 1.5.2\Cross.exe
Report Id: ac18b3f2-67a1-11e0-afc8-0013d3ec000c
Looking up this fault code seems to suggest it is some kind of Access Violation. No real idea what that means.
I've uninstalled all U46 drivers and Cross software, restarted, re-installed and this has not resolved the problem.
Anyone have any ideas, or am I looking at a complete Windows 7 re-install?