Solution 1 - Mac OS only
Update Premiere Composer. We've added M1 processor support in one of the updates. To check for updates:
1. Open Mister Horse Product Manager application from Windows Start Menu or Mac OS Spotlight
2. Update Premiere Composer
If this doesn't help, please contact-us.
Solution 2 - Windows only
We're investigating why this happens to a few people. It seems you Windows doesn't have the required runtimes installed and installer failed to install them for some reason.
To fix this, please install "Microsoft Visual C++ redistributable" from this direct download link: https://aka.ms/vs/16/release/vc_redist.x64.exe
The link is taken from this full Microsoft support article, if you would like to read more about it: https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads