@justinmrkva Wow. Hmmm. Sounds like it might be a permissions issue. But if it is, uninstalling and reinstalling should have fixed it. Long shot — can you please Repair Permissions using Disk Utility?
@justinmrkva Sorry for the delay again! Do the extras open if you double click the files found here: /Library/Application Support/iStat Menus 4/extras/ ? (That's the root library folder, not the one found in your user folder.)