swactwiz.exe causing unattended uninstall to pause

Hi

I've deployed SolidWorks Flow Simulation 2012 SP5.0 alongside the main SolidWorks Education Edition 2012 software on an AD network using the following command:

msiexec /i "SolidWorks Flow Simulation.msi" INSTALLDIR="C:\Program Files\SolidWorks Corp\SolidWorks Flow Simulation\" SOLIDWORKSPATH="C:\Program Files\SolidWorks Corp\SolidWorks\" ACTIVATESERIALNUMBER="XXXX XXXX XXXX XXXX XXXX XXXX" SERVERLIST=25734@ServerName /qb

This installs fine however, when uninstalling, the process halts with the following message in the Application event log:

A device or program has requested attention. Device or application: C:\Program Files\SolidWorks Corp\SolidWorks Flow Simulation\binCFW\setup\i386\swactwiz.exe. Message title: SolidWorks Product Activation.

The uninstall can only be resumed when manually killing the "swactwiz.exe" process which isn't a suitable solution for multiple deployments.

I've added the "ACTIVATESERIALNUMBER" property in the install command so not sure why this process is still present.

Any ideas how I can stop this process from halting the uninstall?

SolidworksAdministration