DataGrids in Rev 4.0

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Is it just me or is the DataGrid control not working on Rev 4.0? I tried to open a web app with Google Chrome and the DataGrid control is like frozen or something (can't select items, can't resize columns). I tried it with IE8 but it says that the revWeb Plugin is required. I already downloaded and installed the revWeb Plugin for Windows which supposedly will work for Internet Explorer, Mozilla Firefox and Google Chrome. I also tried opening it in Firefox 3.0.11 but the DataGrid control still seems to be frozen. I just wanna hear / see your review on this. If it is a bug, I hope it's gonna get fixed without any errors because the DataGrid control is one major asset to Runtime Revolution.