What platform is this? You will need the latest/current 7.1 download of the programs. These avoid the need to install an environment variable, which could be the source of the problem. If you are on the Mac, there was also an error in compiling the release which meant that the program "housekeep" was incorrectly named "houskeep", and will need to be renamed. Sadly I do not have Renoise, so can't help with operational issues there - you would need to refer to the author of the Renoise CDP facility.