Memory Leak in Code?

Hello, I am having an issue using your plug-in… I have a one admin field created which I use for the product noted above.

I now need to edit this field/form on this page, however, whenever I go into the admin to do so and click on the “edit” button or the name of this field, I end up with a 404 error. The plugin also seems to be creating an very large memory drain on my site and after/while I attempt to access the field to make edits, memory usage goes up to ~1,200KB before the site times out and I have to kill processes to get it going again. I like the function of the plug-in, but this is a big issue for me. Can you check to see if you may have any open code left with your last update (worked fine prior to installing this update).

The page I need help with: [log in to see the link]