db query problem

[buducom]

I am taking over code from someone else which is basically shit and i cant find the reason why this is not working:

the q is the SQL query and works perfectly fine (if copied into phpmyadmin for example.

$db->query($q);

the db seems to work on the rest of the site and an echo $q; puts out the query perfectly.

what could be the reason its not executing?

[ScubaKing22]

2 Things: What's the error it's giving you? Also, does that class even exist and has it been instantiated?

[buducom]

looks like the initation works
i rewrote the DB access
and got a function DB return

I noticed that the database names are different