New update is available. This time, due to a repository owner request, the iBlacklist package scripting is changed. As a result, the old package is completely removed INCLUDING THE CURRENT DATABASE. So you will have a brand new database after this.

So, if you don't want to set it up again, you can backup this file BEFORE performing the update:

/var/mobile/Library/iBlacklist/iBlacklist.sqlitedb

And later restore it with 666 permission (RW-RW-RW)

This won't happen on further updates.
Please try that in order to check if any problem remains