Sonic SE plugin issues


I have installed the Sonic SE plugin and all is working fine as an administrator for the computer. When i log in as another account with less privileges none of the sounds work from the plugin.

Has anyone got any idea if this could be a permission issue and if so where or what would the account need access to?

I have found and located the steinberg folder in the program files and i have also found another in the administrators users folder then appdata (the one used to install).

Am running Windows 7 in a domain environment if it makes any difference?

Many thanks