Acces Violation! HELP!

[Kanabi]

So, when I try to add spell to "Killer" I getting error

Code:

Acces violation at address 00615E9A in module 'BMega.exe'. Read of address 00000000.

Only what I can do is using auto heal etc, everything except attack sequences ;/, please anyone help me.

PS. My system is Windows 7 Ultimate 64bit, every drivers are updated regulary.