Supplemental TS-CHEM Installation Instructions for Mac Users

Currently, TS-CHEM is an Intel-based application, and as a result, certain Apple products (MacBook Pro, MacBook Air, iMac, Mac Mini, etc.) that contain Apple silicon chips (e.g., M1, M2, or M3) may not be able to solve TS-CHEM models, producing a message in the run window noting that there is a “Bad CPU type in executable” (see example below).

To solve TS-CHEM models on Apple Macintosh computers that contain Apple chips, users can install the Rosetta 2 software*, which allows those machines to run Intel-based applications.  To install the Rosetta 2 software, follow the steps below:

    1.    Open up the Terminal application

    2.    Copy and paste the following text in the command prompt:

                softwareupdate --install-rosetta

    3.    Press Enter, and follow the subsequent prompts to install the software.

Once the Rosetta 2 software is successfully installed, machines with Apple chips should be able to run TS-CHEM models without any issues.  

Please contact the TS-CHEM Support Team (Support@TS-CHEM.com) if you have any questions, or if you require any assistance with installing the Rosetta 2 software.

*Rosetta is an Apple utility that enables a Mac with an Apple silicon CPU to use apps built for a Mac with an Intel processor. (see https://support.apple.com/en-us/102527). Computers in this category are listed on the Mac computers with Apple silicon web page (https://support.apple.com/en-us/116943).