Open Mainconsole then this message "The procedure entry point..."
Mainconsole server execute the .dll file version which is the different version from Mainconsole server. It might cause by below reasons:
1. User copied the different version .dll file into Mainconsole folder.
2. User upgraded patch for Mainconsole server only but didn't upgrade client patch as well.
Remove Mainconsole then install it again.