Inno Setup not registering dll/activex

Hi,
I've made a setup for my software using Inno and so far it's been working on all win xp/vista/7 PCs. Recently one of my users got a runtime error while starting my software on his Win 7 PC.

Error : "ActiveX component can't create object"
The code line at which this error pops up is "Adodc1.refresh"

My guess here is that the files used by the ADO control were not properly registered by Inno. "PrivilegesRequired" is set to "admin" in the Inno script. I saw another similar thread here and apparently someone managed to solve this problem by setting "PrivilegesRequired" to "poweruser" but that did not work for me.

You can download my software freely here if you want: http://www.kestrelfly.com/download/

How can i fix this problem :confused:

Best Regards,
Krishley