[Therion] MacOS install issues: version conflict for package "Tk": have 9.0.3, need 8.1.1

Hi, I am trying to help a friend install Therion in a Mac. After following the instructions available at https://github.com/ladislavb/homebrew-therion, when trying to run xtherion as instructed we are getting the following error: % xtherion Error in startup script: version conflict for package "Tk": have 9.0.3, need 8.1.1 while executing "package require Tk 8.1.1" ("package ifneeded BWidget 1.9.1" script) invoked from within "package require BWidget" (file "/opt/homebrew/bin/xtherion" line 12915) I have already applied the TK version and BWidget fixes mentioned at https://github.com/ladislavb/homebrew-therion but the issue remains. Any ideas? Regards, Rodrigo