regcomp fails: "CannotRegisterImplementationException"

hello

i'm trying to upgrade a Calc addin from OOo 1 to OOo 2. 
recgomp fails
with the message below:

error (CannotRegisterImplementationException): cannot get
uno environments!

i'm running Windows XP SP2.  i installed OOo and OOo SDK
version
2.0.3.  i configured the SDK as instructed by running
setsdkenv_windows.bat - this runs and creates a file by the
same name
under "Documents and Settings".  at the DOS
command line i invoke that
file, then proceed with the build.  the first few steps
complete fine:
idlc, regmerge, cppumaker, successful compilation/linking of
my DLL.
then regcomp fails as noted above.

what might be wrong with my environment that prevents
regcomp from
finding the URE?

one question mark -  the OOo SDK documentation says, with
regard to
setting %OFFICE_HOME% to the location of OOo: "Be sure
that it is not
a user installation only".  what does that mean?  are
there two
different builds of OOo, user and developer?  i downloaded
the latest
version of OOo from the main site and don't see any other
installation
available.

kind regards,
eric

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