PTB Error Question

Hi,

We are getting the following error whilst running one of our experimental scripts.

PTB-WARNING: Call to PsychAvSetMmMaxThreadCharacteristics() for Vista-MMCSS scheduling failed for threadhandle 69F4F0B0. Setting thread priority to HIGHEST as a work-around...

The are no other associated error messages.

I have had a look at past messages on the forum but cannot see any clear instance where this is explained.

Our scripts run fine and the reported timings are fine, so I don't see that the error is reporting anything drastic. But I would like to find out what it means / if it is important.

Info:

We are running latest PTB
Matlab 2012b 32bit
Dell Precision T1600
Intel Xeon Quad Core 3.10GHz
RAM 6GB
Win 7 Professional 64Bit
NVIDIA Quadro 600

Thanks

Peter