Uncaught TypeError: Cannot read property 'swap_total'

Saw the following errors on the AdminUI.

Client-side error-report for user "Administrator" on node 'ns_1@10.1.6.211':
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.112 Safari/535.1
Got unhandled error: Uncaught TypeError: Cannot read property 'swap_total' of undefined
At: http://10.1.6.211:8091/js/cells.js:64
Backtrace:
Function: collectBacktraceViaCaller
Args:

---------
Function: appOnError
Args:
"Uncaught TypeError: Cannot read property 'swap_total' of undefined"
"http://10.1.6.211:8091/js/cells.js"
64
---------