I have same issue here. I try package an empty project and its failed with wrong string input, then i tried with ue 4.16.3 an empty project, with same configuration and it was success. And finally I tried package project in 4.18.0 preview 1 and have success too. So I guess in next version this will be fixed.
I don’t have plugin in my project, I’ve disabled all of them, but they stay in the xproject file as “disable” but they seem to block the packaging. My xproject file :
Ewilann. Could you tell in which file exactly you found that “plugin” array?
I downloaded 4.17.2 and I’m unable to launch my blueprint project on iOS device connected to Windows. At 4.17.1 everything was fine and I didn’t changed anythin what can have impact of that error.