MP client is crashing when STOPPING playing a mounted DVD .iso file
It was related to Windows Update from Microsoft and need change in MP Code to handle it.

h4. Steps to Reproduce
It seems to happen only on Win7 32Bits.
Mount ISO (DVD for example)
Try to Unmount.
MP Crash.

h4. Additional Information
Crash after KB2533623 KB2555917 KB2507938