When attempting to install STK on MacOS using a windows emulation tool, such as Parallels, some customers are seeing this error message:

The install error is due to decompressing the downloaded zip file using the OSX zip file extract feature.
To fix the problem, copy the zip file to a local drive and extract it with the Windows Explorer “Extract Here” feature. Then proceed with the installation.
To learn more about using STK on a Mac, please check out the
Is STK Supported on a MAC? article.