ERROR MESSAGE RadEditor5.5.0 An error occurred while trying to save to file. File not found.
Exception message:Could not find file 'c:\inetpub\wwwroot\RadEditor5.5latestCS\_23Tesyt2.aspx'. DESCRIPTION The problem comes because of the basic C# variable naming convention - you cannot have a classname or a variable name beginning with a number. If we have RadEditor placed in a file named 12_04.aspx, it internally searches for the parent page's object representation (which has become _12_04 instead of 12_04). As there is not a file named _12_04.aspx, the error message is thrown. SOLUTION
Save the editor content to a database or rename the file according to the C# variable naming convention, i.e. news_12_04.aspx.