https://bugs.winehq.org/show_bug.cgi?id=56085
--- Comment #9 from vmustin@gmail.com --- In the meantime, I have installed the current version 8.1.1 Build 17 of Guitar Pro with the trial version of Crossover and tested the "Design function". The result is that the same error occurs with crossover as under Wine 8.0.1. I then uninstalled crossover again, and I am still looking for a solution with Wine.
Shall I still try in a fresh wine prefix with the latest wine, which currently is wine-9.0-RC3?