A nice guess, and one that I entertained, however it falls down on
explaining why only the first instance does not get destroyed but all
subsequent instances do. I set all references to null and explicitly place a
call to GC.Collect in the ServerTerminate method.

Guess again.

"Jens Thiel" wrote:

"Another frustrated developer"
. com wrote in message
...
Interesting....

It seems that Excel, although calling Server Terminate on the original
DLL,
never lets go of it's reference to it, even after all workbooks are
closed.
[...]

My guess is that you have references in managed code which haven't been
garbage collected yet.

Jens.

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