I'm using a jqGrid with multiselect = true. Also, I have an event attached to onCellSelect. When I select text from multiple columns IE throws this error:

'parentNode' is null or not an object

When debugging I found the problem on the getCellIndex function. When checking if the jQuery object is a th or td it tries to return the closest td or th. If I check the html on the jQuery object I can see that it consist of multiple td's, and this returns undefined, causing the next line to throw the above mentioned error.

I tried to reproduce this in FireFox but it seems to be ok.