Win32,OTRS 2.4.7,ActiveState Perl 5.10 with mod_perl.
Had upgraded ITSM modules from 1.3 to 2.0.2 successfully. but couldn't install
ChangeManagement module. I got error about can't locate object method EventHanlderInit at ITSMCondition.pm.
find workaround for this is change in files ${Self}->EventHandlerInit() to ${Self}->Kernel::System::EventHandler::EventHandlerInit()...
and resubmit module installation.
I have to change all these calls in files.
then module deployed but with errors about changed files.

then I have assigned rights to user and have tried to create change.
UNSUCCESSFULLY!
after submit form got error: "Was not able to add change".Column change_state_id cannot be null.
what's wrong, please help.
p.s.
set ...ITSMChange#EditState to 'Yes' , as advised here in forum , not helped.
thanx.