The exception with "System.InvalidCastException: Unable to cast object of type Syncfusion.Windows.Forms.Tools.XPMenus.XPMenusProvider" occurs only in the following scenarios,
You can refer to the following steps in your system to resolve your issues.
Remove the older version dlls from your application that is found in ReportLib project folder. This should cause the error on handling the form in designer mode to add a new Syncfusion control. Also ensure the older assembly does not get reflected anywhere in the project.
Refer to the following steps to upgrade projects.
For project Migration, refer to the following link
When the issues still exist, you can get the license key manager details that can be achieved by using the following steps.
Note: If still the issue exists, perform a full textual search for old Syncfusion version references in the project. If anything exists, clean all those project files manually and add the correct references.
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