I have V22.214.171.124 RC installed. When clicking on "Check for Updates", it tells me that there is a new verison and ask if I want do download. I select YES, and it downloads the file, tells me that it is installing the update, shut down prevx and restart it, and its the same version again. I can continue this endless... I am running Windows 7, 64-bit with the 64-bit RC version of Prevx.