(Case 00386105)
Colin,
Depending on the Operating System in use, the ActivInspire License Key (in a file called inspire_license.xml) can be retrieved from the following locations:
Windows XP:
C:\Documents and Settings\All Users\Application Data\Promethean\ActivInspire
Windows Vista, 7, & 8:
C:\ProgramData\Promethean\ActivInspire
OS X:
Macintosh HD/Users/Shared/Promethean/ActivInspire
Linux:
\etc\xdg\Promethean\ActivInspire