I am getting some javascript errors on sorting a list (UL).

Errors I get:

• this.options.curAnim is undefined
• this.sortCfg is undefined

The first error is thrown the first time I reorder an item in the list. After it's being thrown, I can still continue to edit the list and .ajaxSubmit() data to a backend to make changes to the DB. When I do submit the info to the backend, however, I get the 2nd error, after which I cannot edit/re-order the list any further.

Interestingly enough, the 2nd error only appears to occur when the list is rather big. It does not occur on small list of unordered elements.

Any ideas?

Thanks