Missing Document Edit tabs

Any idea what would cause the document edit tabs to go missing? Normally you would see Document, Settings, Template Variables, and Resource Groups tabs. For a selected few of my document pages ONLY the Template Variables page is showing with no header or tables.

http://www.rovaconsulting.com/modx-missing-tabs.tiff

I'm running on a Macbook Pro using MAMP Pro Version 2.2.

• MODX Version: 2.2.10 Though the system report says: MODX Revolution 2.2.8-pl (traditional)
• PHP Version: 5.5.3
• Database (MySQL, SQL Server, etc) Version: MySQL 5.5.33
• Additional Server Info:
• Installed MODX Add-ons: SimpleSearch, SlideshowManager, Wayfinder, UltimateParent, Tiny MCE
• Error Log Contents: It's empty...

Try turning the compress_css and compress_js System Settings off.

Thanks, but that didn't affect this problem.

Why is it saying 2.2.8 in the system info report? Something is very wrong there.

Try manually deleting everything in the core/cache/ directory.