juangvargas

Thxs a lot!! now it works!!!

Same here. I'm on MacOS Monterrey on a MacBook Pro M1 and can't run it!

For El Capitan: An El Capitan version of Mono has been released, version 4.0.4.4 Download it here: Download Mono MDK Due to changes made by Apple in El Capitan, Mono is no longer able to be installed in its default directory. However, as of writing these instructions (Oct. 6, 2015) the Mono installer still attempts to install as default and fails without giving an error, thus not actually installing Mono. This will likely be changed/updated in the future, so the instructions listed below may not be necessary in the future. After installing Mono, do the following to confirm the installation: Open TerminalType: monoIf you get a list of mono commands that starts with "Usage is: mono [options] program [program-options]", then Mono has installed properly. If you get "command not found", then Mono has failed to install properly. Follow the steps below:In Terminal, type: sudo mkdir /usr/local/binPress enter -- This command creates the directory for /usr/local/binYou will be prompted for your user password. Type it in and press enter.Type: sudo chmod 777 /usr/localPress enter -- This command changes the permissions for the /usr/local directory to give it read/write permissions​Reinstall Mono and use Terminal to confirm. You can also type "which mono", and the answer returned will be "/usr/local/bin/mono" If You Get A Message About The Toolkit Requiring Mono 2.8 or Higher To Run (Despite Installing Any of the Versions of Mono Above): Once Mono is installed correctly, use this version of the Toolkit: https://www.dropbox.com/s/ongd4aunfuhid0b/RocksmithCustomSongToolkit.zip?dl=0 ** I have edited the script that launches it so that it works on El Capitan. This information has been passed along to @@Alex360 so that all future versions should work without editing. ** Thanks, Thanks, Thanks!!! Works fine on Mac OS Sierra!