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You can download older versions of the RadControls either through your Telerik account or through the Telerik Control Panel.
If you go through your Telerik account you need to navigate: Products & Subscriptions -> DevCraft Ultimate -> Download -> RadControls for ASP.NET AJAX -> Older Versions
If you go through the Telerik Control Panel you need to select RadControls for ASP.NET AJAX and click on the 'View All Versions' (check the attachment).
We have provided you access to the version needed. If you need any further assistance don't hesitate to contact us.
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