Problem with Slick.CheckboxSelectColumn plugin and frozen columns

[wjforero]

Hi,
I'm using slickgrid 2.1 fork with frozen columns with the checkboxselectcolumn plugin,and have an issue on IE8.
When a user tries to do click on a checkbox to select a row, if the user moves the mouse to other row before the event has been managed the other rows is also selected and the corresponding checkbox is marked. This happens with frozen columns enabled and using the library in an app that is using jquery 1.7 and jqueryui 1.9.
Reading about other issues I found that probably the problem is with the getCellFromEvent function that is using the getCellFromPoint function instead of the getRowFromNode one that is used in the main branch of slick grid. So I tried to change this and now the issue is gone but the checkbox selection is not working, I mean, when I select a checkbox the row selection event is not being thrown.
One solution is not to use frozen columns but this is mandatory for this application.
Any insights on it? (Let me know if it's not clear in up)
Thanks