Update 149-5 (Hotfix #2) 13.09.23:

Fixed a rare issue that caused the SynergyV1 offline calculation to crash.
Fixed a rare issue that caused the Demon Master challenge to grant more mana than intended.
The SynV2 upgrade Necromantic Convergence now grants the correct bonus at the maximum level.
If necessary, a soft reset of the Battlefield Demonic Essence Shop will be performed if the above mentioned bug was heavily exploited.