I have a Pegasus R6. Since I updated my iMac (mid 2011) to MacOS Sierra (v. 10.12.1) the PromiseUtility.app stopped working. This means that no graphical interface shows up when opening the PromiseUtility.app. I still can open some menus thought (see the attached screenshot). The R6 is not detected as external disk either. I downloaded and installed the last version of the utility (http://promise.com/DownloadFile.aspx?DownloadFileUID=4124) but still it did not have any effect on this issue. I haven't tried to solve it through command line but I will be willing to (if needed). Any help? Thanks!