I'm using Visualforce Remoting for an application, and periodically getting the error:
Uncaught TypeError: Cannot read property 'tid' of undefined, from line 84 of the VFRemote.js library file.
The file is auto-loaded into my page by my controller defining Remote Actions.
https://c.na4.visual.force.com/jslibrary/1383366200000/sfdc/VFRemote.js (I'm aware of the note at the top, but not including this script directly in my page.)
I'm not clear what's causing this. If I update my Application Cache Manifest, it will cue a refresh of the page, and then the error disappears.
Any thoughts? Is it a problem with the manifest?