After installing Trilian (without any problems), I started to install the updates. While the software update (the plugins update) worked, I have troubles to update the Patch Library and Soundsource, resulting in an error message, saying the the preflight script failed.
I read the article Patch and Soundsource Library update problems, and I fully understand that I have to choose the folder containing the STEAM folder.
However, with the Mac updaters, I can only choose the the (root of the) drive where the STEAM folder is located, but not the folder itself. Therefore, logically, the error messages. Similar problem with both the Patch Library Updater and the Soundsource Library Updater. Any advise?