activex exe Runtime error 430 - Windows

sorry I can not type chinese now

my question is :


I have an activex exe and had registered it by cmd

"active.exe /regserver"

but the main exe referencing it showed error "Runtime error '430' class does
not support Automation or does not support expected interface"

and then I restarted the computer and re-registered the activex.exe ,it could
work.

I am confused that why the activex.exe worked after I restarted computer and
re-registered it.Was that an unstable bug of register in OS so that it should
be reset after computer had restarted?if it was,how to confirm the registry
succeed?

my computer is win 7 64 bit and the activex.exe and the main exe were written
in VB6.




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