When I place a webcombo first and a ultrawebgrid later in a page, the ultrawebgrid is not recognized as valid object and launches an error that says that there is no reference of webgrid in the webgrid.dll, if I place first the ultrawebgrid and later the webcombo, this error don't raise, but the ultrawebgrid don't fire the selectedrowchanged event, how can I fix this problem?, I'm using the Net Adavantage 2009 volume 2, thanks for the help