Quote Originally Posted by Eerin View Post
Thanks for the reply, after an extremely long day yesterday looking through all the code and undoing everything that I had worked on over the last 3 days trying to find the problem. I got onto my web host this morning and it turns out they had done a security update and turned on a new mod_security setting (341245) that was blocking this feature. They have now turned it off for me and everything is working perfectly once again. Hopefully this may help someone in the future if they experience a similar issue. The code it's self is still as bullet proof as ever. Thanks.
Thank you for pointing this out. I received a "403 page not found" error when selecting price as part of the filter. I searched high and low over the last week or so to see if I could find a solution but to no avail. After seeing this post over the weekend, I contacted my host this morning and they made some changes on their side and voila, the price filter is working again.

Power to the people that support community based projects!