Full regression of BB codes is required.
It might make sense to wait for linked issues to be done so that you do not spend too much time on regression.

Pavel Gradobik as far as I remember, we discussed that this issue should be reopened. Could you please do it ASAP?

Exception leads to HTTP Status 500
Precondition: you should be a registered user at jtalks.org. You should be logged in.

Steps to reproduce:

1. Select any branch in any section.
2. Create a new topick and name it.
3. Put text from lomalka.txt file, attached to issue, and click "Save" button.

AR: HTTP Status 500 - An exception occurred processing JSP page. Topick saved but not accessible.
ER: topick saved and accessible

Preview of this text is not accessible also.

Test evironment
Mozilla 26, Chrome 31, Opera 18, IE10.

Test scenario
Steps the same as in comment above.

AR: topic saved and accessible, answers sent and visible, private messages sent and accessible, preview mode works in "New topic"/"Answer"/"Messages".
ER: topic saved and accessible, answers sent and visible, private messages sent and accessible, preview mode works in "New topic"/"Answer"/"Messages".

AR=ER issue can be close.

Regression tests: use the different combinations of bb-codes from lomalka.txt file for Send/Save/Edit modes of "New topic"/"Answer"/"Messages" screens.