Acrobat 11.0.0.18 AIP creation failure; acropro.msi not generated

Hello.

We routinely update Acrobat with the latest patch using the same methodology every time. Since 11.0.0.14 or 11.0.0.15, this has always worked fine:

msiexec /p <patchname>.msp /a <location of AIP created from the original installation media DVD)>\acropro.msi

With the patch for 11.0.0.18, this process completed successfully. However there is a problem. In the newly created AIP, "acropro.msi" is not there.

I have tried numerous methods including using a completely different workstation with brand new files copied directly from the original installation media. Our methodology has not changed.

Have they changed the location of acropro.msi in the resulting AIP, or is this patch messed up?

Please help.