Deleting a line that has been grouped

[meindert]

A warning is shown when removing a record from a gridlist that has grouping enabled and 'setCanRemoveRecords(true)'.
I tried to reproduce on the 'grid cell widgets' but it doesn't seem to be a issue....

1. the SmartGWT or SmartClient version and browser version(s) involved;
SmartGWT 2.4, firefox 3.6.16

3. for a client-side problem, the contents of the Developer Console (see FAQ for usage);
WARN:Animation:Attempt to fire registered animation:{ID: "_7"...
target: [GridBody ID:isc_ListGrid_5_body],
Caused an error:_14 is null

com.smartgwt.client.core.JsObject$SGWT_WARN: 12:00:23.080:TMR7:WARN:Animation:Attempt to fire registered animation:{ID: "_7",
target: [GridBody ID:isc_ListGrid_5_body],

5. sample code.
Sorry, to lazy to make a test case

Posts with incomplete information are much more likely to be ignored.