Throughout Cubit Estimating software lifecycle you will need to update the software to the latest version. If you get an Invalid licence key message when attempting to register the software, then this is most likely caused by a mismatch between the Licence key and software version installed.
Check Cubit Estimating version installed
The steps below will help to overcome the problem.
1. The software version number will appear in the bottom left corner of the registration page.
Fig.1 Invalid Licence
2. You can check that the licence you are using is appropriate for your version of Cubit Estimating, by referring to the email you received from Buildsoft.
Fig.2 Licence Key On Email