Ive been on the hunt for a multiple cat search feature and have found my solution which is great!
I have one major problem with your form.
Ive done all the testing and the whole system works fine searching.
Its just when I click search the results are shown on the homepage which features a image slider which makes the page all funny. I would like the search results to show on a normal page without the main slider on.
Click Search = Results on index.php *NOT GOOD*
Click Search = Results on search.php *GOOD*
This would make search results look a whole lot better and the complete installation of this plugin.
Any ideas would be great and any info needed then I will supply.