Hi staticx-

Sorry to hear that the 64-bit version is not working. If you remove the x32 version of the plug-in so that Reaper only scans for the x64 version, does UltraChannel 64bit work then?

Additionally, it sounds like you are using Windows 10? Since that version of Windows was released recently, we have not yet had much of a chance to test compatibility of our plug-ins with it, so that could be an issue as well that we will look at in the future.

Best,

Tom