Cannot start SDP after server dissaster

Cannot start SDP after server dissaster

Hello Support Team.
We've got the problem.
Description: we had Service Desk Plus 8 (patch 12) installed on Win 2008 (Virtual machine) with external MS SQL 2005 Database. Suddenly we lost our virtual machine with Service Desk (Help Desk), but DB was still working fine.
We installed Server again from scratch, install Manage Engine 8 ( to first on local MySql DB), patch it to 8 patch 12. Then try to connect to working original external DB (changeDBServer.bat show fine connection).
But we cannot start Manage Engine with error "PPM Installation failed. Please contact the support team." In logfile there is a error "You are trying to use a connection factory that has been shut down: ManagedConnectionFactory is null."
Please help us. This problem is emergency

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