Multi-DB Problem - Locked out of wordpress-Problem with database

its not marketpress i have issues with but with multi-db plugin.
Hi there. Please i am having problems with installing Multi-DB plugin on my
multisite install. There was an error and now i cant login into my wordpress backend.
I did everything as instructed in the usage page of the plugin- But i must say that your explanations are pretty messed up, the steps arent well explained in absolute details (please consider revising it). I have the screenshot of the errors in a zip

I am stock, can't move further in my development as i am currently locked out of wordpress , so i need answers to this, asap.

Please note that i am sending you this message through your contact form because, i am locked out of my wordpress admin backend and cant access my support section. Thanks.

Please treat this with high priority. Thank you