Transmission 2.91 Download Now Release Notes Previous Releases Everyone running 2.90 on OS X should immediately upgrade to 2.91 or delete their copy of 2.90, as they may have downloaded a malware-infected file. Using Activity Monitor preinstalled in OS X, check whether any process named kernel_service is running. If so, double check the process, choose the Open Files and Ports and check whether there is a file name like /Users//Library/kernel_service. If so, the process is KeRangers main process. We suggest terminating it with Quit -> Force Quit. https://www.transmissionbt.com/