raphael: Just to verify that I understood you correctly: Local preview works fine, but preview does not work on an actual iOS device, the iOS simulator, nor and Android device?
Some things to check:
- Which exact error message are you getting?
- Are you sure the device is connected to the same wifi as the Mac?
- Is the project open in Fuse on the Mac while you’re running preview on device?
- What’s the full output of
telnet <your ip> 12124? - Does this only happen to a specific app, or does it also happen with a freshly created blank app?