Rendering error while writing to file in After effects CS 5

i have problem after effects cs 5 on windows 7 64 bit.

when try render out quicktime formats in after effects error message:

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after effects error: rendering error while writing file "e:/ . unable open file. (-1610153459)

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rendering other drives, c: or d: works fine try render e partiton

i error.... must have permissions on partition.

i dont want reinstall windows,- wonderful.

i using latest quicktime.

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