I have a radar chart that I've integrated inside the portal example.
When the chart gets rendered I noticed in firebug an error: "sprites[i + j] is undefined".
I've debugged the application and I saw that j is undefined in the method: the only reference to it is a declaration on line 44054, but it is used on line 44101 on the store.each function.
What is the logic behind using the j variable?