Summary
Unreal 5.8.1 or 5.8.2 on macOS 27 with Xcode 27 won’t complete a build of the Game profile via UBA or through the create packaged build option within the editor. Fails at step ‘Touch UBT generated tiles’ with Bad File Descriptor. Editor builds without issues.
What Type of Bug are you experiencing?
Platform Other
Steps to Reproduce
Attempt to build Game in either DebugGame, Development or Shipping profile
Expected Result
Game .app bundle is created without errors
Observed Result
Fails at step ‘Touch UBT generated tiles’ with Bad File Descriptor which seems to be a generated script in /var/folders/fy/qk7h6txd4q3400xh3ts0_dsc0000gn/T/SchemeScriptAction-xxxxxx.sh
It also outputs a base64 encoded string into the log;
{“type”:{“workspace”:{}}}
Affects Versions
5.8
Platform(s)
Mac