Hello Lisa,
Either the resources where not installed when the computer was re-imaged or the software is not looking in the correct location for the resources. Either way you can import both the Main and Core Resources into the software.
To do this save the links below to your computer. Once saved, open ActivInspire and select File > Import > Resource Pack to Shared Resources. (case# 281384)
Your password is: o35KAjIa
Name: InspireCoreResources.as4a
Size: 86.36 MB
Expires: November 20, 2013
Name: ActivInspire_main_res_v1.1_ENU (1).as4a
Size: 249.92 MB
Expires: November 20, 2013
Hope this helps!