you used all the same configuration as on the "old" server? including FQDN Hostname?
what is logged in your rds.log? you could try to delete all content in the omniback\tmp director and try to restart dp services. sometimes, depending on what is wrong, i could help to run a repair of your dp installation (programms and features -> dp -> modify -> repair). but this wont help if really something with your idb is wrong.
