Error: Unable to get value of the property 'GetWindowByName': object is null or undefined

[Craig Mellon]

Hi All,

Here is the scenerio - I have a project in VS2010, on one of the pages I open the RAD Window using the following method (which works as expected):

Dim strScript As String = "<script language='javascript' type='text/javascript'>Sys.Application.add_load(ShowWindow);</script>"
Page.ClientScript.RegisterStartupScript(Me.GetType, "ShowWindow", strScript)

<script type="text/javascript">
    function ShowWindow() {
        var manager = GetRadWindowManager();
        var window1 = manager.GetWindowByName("QuoteWindow");
        window1.show();
    }
</script>

As mentioned the above code works perfect - the problem is I simply copied this code across to another project which is identical to the first one and everytime I hit the button to open the RAD Window I get this error:

'Error: Unable to get value of the property 'GetWindowByName': object is null or undefined'

I have searched and searched the forums to no avail - please provide any help asap if possible as this is pretty urgent.

Thanks in advance.

[Craig Mellon]

I was using telerik 3.5 dlls with .4 components.

Stupid mistake but all fixed now, thanks.