RQM excel importer add in not loading

Hi,

I have just installed the RQM excel importer on a client's machine. However after the installation successfully completes, no add ins are available in excel. On checking the addins under file>options. I can see the Mso2RQM Excel Add-in is disabled. However when trying to enable it, the load behavior error message states "not loaded. a runtime error occurred during the loading of the com add-in"

OS: Windows 7 32 bit
Office: 2010 32 bit.

Any assistance will be appreciated.

Kind Regards,

Michael.