Telerik Control Panel does not support multiple parallel version installations of the same product.
Concerning the version number discrepancy of the Kendo.Mvc assembly - indeed this is confirmed as an issue in the service pack release, for which we apologize. The solution is to upgrade to the assembly from the latest internal build which was uploaded today, available for commercial users. You can find it in your account's Products & Subscriptions > Latest Internal Builds section.
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