I recently updated the NVidia driver for GeForce_8800GTX to version 180.48
(along with updating DirectX10, misc windows update, SP1) After discovering
nTune was the program to view GPU temperature on the video card, it was clear
that dreamscene was broken and aborting explorer.exe with the data execution
protection.
Even after uninstalling the NVida drivers and re-installing version 175.16
dreamscene remained broken. I had also added the StarDock player for .dream
files. It has been uninstalled, along with re-installing dreamscene with no
correction.
Reverting the driver restored system stability (long shutdown time, I
suspect a memory leak in the driver) but not dreamscene. Consider avoiding
NVida updates if youre not into a long troubleshooting session.
I think DEP kept things pretty well in order for this problem. There was a
recent install of Micrsoft Search wich was interfering quite heavily during
this troubleshooting session.