Random Problem in an Installation, Help!

I have an installation that has been down for a few days, finally managed to logon this morning and was getting loads of error in layer group errors. (log file 450MB!
It seems this error was stopping the shutdown working too :(
The first error is this

00:00:07 ERR : Exception in VVVV.PluginInterfaces: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at VVVV.PluginInterfaces.V2.IEffectHost.SetEffect(String filename, String code)

So is the conclusion that the memory is iffy in this pc?
I’m using video out shared memory on a contour node, should I change this to a video texture and renderer?

On launching I got
Problem signature:
Problem Event Name: APPCRASH
Application Name: vvvv.exe
Application Version:
Application Timestamp: 4d5da9b5
Fault Module Name: GenApi_MD_VC80_v2_0.dll
Fault Module Version:
Fault Module Timestamp: 4cd2f8b2
Exception Code: c0000005
Exception Offset: 000f2c4a
OS Version: 6.1.7600.
Locale ID: 1033
Additional Information 1: 1f68
Additional Information 2: 1f684606c3587d4c33f5bb3435386d38
Additional Information 3: 9276
Additional Information 4: 92768a799d646187c49532ff0135dc45

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And had to restore from a backup, question is for me, why does it work for days, ( and for many days without a single error here ) but not there, it is a different pc, so I can’t rule out bad memory…
Any thought devs?

for us it was cheap raid-controllers…
but think downtime, reboot, re-copy, open
might will work ;]

Its been running for a few weeks, then this :(