LOGGED IN USER ERROR

[slimim]

My Store works fine but once a user logs and lists products for example as soon as he presses the buy now botton the following error occurs:

 

1064 - You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

 

delete from TABLE_WISHLIST WHERE customers_id=37 AND products_id=

 

[TEP STOP]

 

 

All other buttons, i.e Update, Add to Cat etc. are fine

this only happens when an existing user logs in 1st

 

Any suggestions?

Chers

Slimim