On a 64-bit version of a Windows operating system, there are two versions of the Regsv32.exe file:
The 64-bit version is %systemroot%\System32\regsvr32.exe.
The 32-bit version is %systemroot%\SysWoW64\regsvr32.exe.
Can you plz clarify which one you are using.
Also, please check
http://support.microsoft.com/kb/249873[
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