To reproduce:

1. Install 4.4.1 bundle
2. Let it initialize, get it up and running
3. Shut down Tomcat.
4. Remove 4.4.1 JARs. Replace with 4.4.5 JARs.
5. Restart Tomcat. Start Update tasks.

Expected behavior:

1. Update tasks should complete successfully

Actual behavior:

1. Update fails partway through with attached error

Workaround:

If one updates to 4.4.4 first, and then updates to 4.4.5, the updates work.

Issue found by:

Mina Labib at CSC.