Windows 7, CS4 Media Encoder freezing and crashing upon clicking “Start Queue” – every sequence!

Windows 7, CS4 Media Encoder freezes when queue starts with sequences from Premiere. However, sequences opened from Media Encoder’s “Add Sequence” export fine. Have re-installed (without first un-installing), issue is ongoing. I have several important deadlines fast approaching, please help! Media cache has been cleared (both automatically and manually), computer has been defragged and scanned for disk errors… I am absolutely stumped!

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