Thanks a lot for your help. I have spent 2 whole days installing Caché but couldn't help myself. I've also seen this post https://community.intersystems.com/post/october-17-2019-%E2%80%93-advisory-intersystems-products-and-apple-macos-1015-catalina but I thought it would have been solved already. 

I haven't install docker yet. But I'll definitely try with docker. Can you please provide me any guideline on how to install Caché with docker? Any kind of help would be appreciated.