Unable to save current orgchart

Hi,

We are using OrgChart 3.0 SP1

I get the following warning when I try to save current orgchart and there aren't any other previously saved items.

"You have exceeded the maximum number of saved items for your user profile. Remove a previously saved item before saving a new one."

Is this because we're using "Store user preferences in cookie" as the user preference storage option and the maximum size for cookies is 4KB?

Is there a way to change the maximum size for cookies? We're not able to save any of the orgcharts when they're expanded.

Thanks!