Unknown error in SQL syntax

[dealbyethan.com]

Are you still using Cross Sell on your site or did you change to Multi Cross Sell or anything?

Did you check all changes to manage the code for Cross Sell with your upgraded site?

NOTE: Half of the error message is with prefixes on the table names and half the code is without prefixes on the table names ...

We are using cross sell advanced and did check all changes to manage the code. You said half of the error message is with prefixes on the table names and half the code is without prefixes on the table names. How do I fix this issue?