Running Codea Projects on Codea Runner

After trying a few Codea projects on my Mac many of the ones I tried don’t work although some of them load into Codea for the Mac.

Managed to get Custom Cubemaps.codea to run and Space Chase.codea but most of the others I tried just present a black or white screen.

Is there a particular configuration required for projects to run on Codea Runner ?

p.s. Can you run zipped Codea project files - I have a lot of zipped projects from exported Codea files which would not run - could you add that capability to open zipped Codea files ?