Hello again,
I was able to spot the problem, apparently two copies of the table exist in the same schema, I have no clue how. I ran the query select * from sys.tables, and it showed me two copies per table. I had to do the following to fix this:
1) Log in using mclient
2) Drop table
3) quit
4) restart database
5) log in again
6) drop table again (first drop was for the first table)
7) double check using select * from sys.tables
It worked for me, but i still don't know how were two copies of the same table with the same name created under the same schema.