Main form failed to initialize CAC

An error has occurred while starting Cognos Planning - Contributor Administration Console (CAC).
Main form failed to initialize.

Error when trying to open the Contributor Admin console

Error Details:
The lock we own has now vanished
Error from Planningerrorlog.csv file:
The lock we own has now vanished

Corrupt Content Store and/or Planning Store

Recreate the corrupt Store(s).

Things that need to be considered:

1. Is EP and BI sharing the same Content Store?
2. Is there a Content and Planning Store?
3. Deployment of the Content Store (Cognos Connection)
4. Export of Admin links and Macro's (EP deployment or Export)