Reply To: Can’t open ProjectLibre on M1 Mac

Same for me, but was easy to fix: I had to install “harfbuzz”.
If you use brew:

brew install harfbuzz
brew install --cask projectlibre

Without brew, you may try your luck here: https://github.com/harfbuzz/harfbuzz

(You may want to start ProjectLibre in a terminal and see to error message)
> /Applications/ProjectLibre.app/Contents/MacOS/ProjectLibre