Open your index.php and set DEBUG_DATABASE to true, then redo the installation.
Im not 100% sure, Gesior only supports TFS I got no ide if OTX even has any websites that are atleast fully supported.
But that message should tell you if you got a diffrent database schema when the AAC is trying to change or add something to the database.
Another thing, since alot of people have problems with the "custom" Gesior's you can download here on the forum, make sure you try one from the github page insted;
Branches · gesior/Gesior2012 · GitHub
I have no ide what version you should use, depends on what OTX is based on when it comes to that version, but might be 0.4 or 0.3