Installshield Error 1628

[Murphy]

I hope someone can help. I get this message when trying to install the ROE extension pack. I have visited the Installshield website and it suggested ending certain installing related tasks in the task manager etc - but my PC won't allow me to do this. It does seem to relate to previously running installation processes which conflict - but I have no idea about this stuff.

Does anyone know how what I should do?

Thanks

[Opulent]

I haven't been keeping informed on this, but I would guess you are running some virtual drive or 'piracy' tool.