WP Template Files - Find and fix error in code causing submenu break upon clicking the SAVE button.

1. Our website: [login to view URL] 2. Where our base template came from. [login to view URL] 3. We have tried many things to solve the problem including wiping out Word Press, uploading a fresh version and only uploading our modified template. Same error. This tells us the problem is not with the installation, but rather localized to the template files only. Also we have lived on 3 different servers, so not a server [login to view URL] error. 4. Error description. The error, or "Submenu Break" as we call it, occurs after dragging and dropping new pages to the submenu and exactly upon clicking the SAVE buttton. Doesn't matter how many pages are added, as we have tried adding just 1, and multiples too. The result is that the last 50 pages disappear from the submenu, which is the "Fort Myers Homes" (this parent page has 49 sub pages as you can see if you hover on the button) and all its sub pages and "Your Naples Realtor. We then must restore the website from backup. 5. See attached zip file.