Loading old reviews created with 1.1 fails in 1.2

[Daniel Kulesz]

Steps to reproduce:

- Start RevAger 1.1 and create a new review session, then save it.
- Change some preferences: disable auto-updates and auto-saving
- Quit RevAger 1.1
- Start RevAger r28/trunk
- Agree to import old settings
- Enter "Instant Review" mode
- Open the previously saved review file (from RevAger 1.1)
- Proceed
- The error message in the screenshot appears.

Please note: This happens both in "Instant Review" and "Scribe" mode.

[Johannes Wettinger (jojow)]

Fix committed into trunk! ;-)