When filtering by regexp: if a value isn't passed in the parameter, the filter fails with a MySQL error, instead of a standard error. It needs to check and negate the mysql statement if no value or value = ''.
Please see: http://symphony-cms.com/discuss/thread/73250/#position-4 for issue
And see Nick's response in the same thread for why it happens.
Strip spaces from the regexp filters, RE #710
Can you check the above commit @designermonkey. Should resolve this issue (for Core fields anyway)
Sorry @brendo, I thought spaces were taken care of before, I didn't spot that, been a little sleepy and unfocused for the last few days.
I will check it a little later, I'm popping in to the office. Cheers for jumping on this dude.
Works fine, thanks @brendo