Upgrading from smartGWT 2.0.0 to 2.1.0

Hello,

We used some smartGWT components (as tree, grid, forms and filters) for our project. We’ve upgraded recently the version from 2.0.0 to 2.1.0 in order to just create Record Component for a list grid.
We want know if it can happen a regression or some incompatibility with widgets using 2.0.0
Navigators:ie and firefox.

Thanks