Make sure the PBL files that contain the DataWindows you want to display are copied to the directory you assigned to the PBLibDir global property. By default, the PBLibDir global property assigns C:\~PL_ as the directory for application PBL files. This corresponds to the File\Common\C\~PL_ subdirectory of the applicationName_root directory in the server’s virtual file system path.
On Vista and later, TreeView DataWindows do not display if you have not given the IIS_IUSRS group full permissions (including write and delete) to application directories. For more information, see “Application directory permissions”.
In AJAX-enabled Web Forms applications, DataWindows do not display if a column in the DataWindow uses a JavaScript keyword for its name.
