There is an updated version of the ProChannel Concrete Limiter now available through Cakewalk Command Center (C3). Make sure when you open C3 to go to settings (Gear button) and click the [Check Now] button if you have C3 set to update at larger intervals.
This resolves an issue where the installer would not run on older versions of SONAR including X3.
*This update is available only to customers that purchased the Concrete Limiter separately*