Question about "run application once" semantics...

Thanks, guys. I have a follow up question/issue related to this
environment. I am pushing out a handful of apps associated with
workstations via OUs (force runs which call msiexec or a setup). I've
tested this a hundred or more times in my own OU but in several other OUs,
I've now run into this issue when NAL kicks off the first app install. I
get a WMRUNDLL.EXE error and no software distribution occurs. The text of
the Dr Watson error is:

The application, WMRUNDLL.exe, generated an application error The error
occurred on 11/07/2007 @ 12:54:26.495 The exception generated was c0000005
at address 004AED14 (NWAPPCreateFullObjectName)

In setting up a few machines today, the first ran fine, the next 3 got
this error. I've synched up everything in PUBLIC across all servers; all
NAL related files that I'm aware of (that show via NAL's "more" button)
are from the last update for ZfD 3, dated 10-04.2002.

I did some searching and the little I was able to find seemed to point at
a particular version of wsreg.dll. Wasn't able to find any particulars
though. Fwiw, wsreg32.exe and wsreg.dll in PUBLIC were dated 6.26.2001. I
swapped in a wsreg.dll from 10.22.2002 which I believe was part of the
49SP2 client. That apparently hasn't helped. Worst of all, it seems
intermittent or arbitrary - I can't really see what's different between
the environment I'm currently in that is experiencing the error and the
one in which it's working. It's the exact same base image, exact same
PUBLIC dir... the only difference is that it's not my home OU. I checked
workstation policies in the other OU and they appear to be the same as in
mine.

I thought I was past this as the PUBLIC sync seemed to clear things up at
another location but now I'm seeing it again. Have you seen this before?
Any suggestions? Thanks a lot!