Search Issue Tracker
Fixed in 5.4.1
Votes
0
Found in
5.4.0b23
Issue ID
810964
Regression
Yes
[OSX][Editor] DllNotFoundException: libMonoPosixHelper.dylib when trying to open a serial port
Reproduction steps:
1) Open user's project
2) Open scene 'Sample'
3) Enter play mode
4) From the dropdown in the top right corner of the game view select Bluetooth...
--- DllNotFoundException: libMonoPosixHelper.dylib will be printed in the console
--- Only reproducible in the OSX editor
Regression introduced in 5.4
Comments (1)
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- Required SpriteMask class (ID 331) is stripped when "Strip Engine Code" is enabled
- “Maximized serialized file backup not found” error is thrown when minimizing a window in a newly opened project
- Build stack trace contains invalid lines when building with IL2CPP using scripts with delegates containing generic types in the signature
- Entities Systems window has a “Show Full Player Loop” dropdown which does nothing when clicked after enabling “Show Full Player Loop”
- Entities Hierarchy Search “Show/Hide” button’s Lens Icon is blurry when the Editor is on an external monitor
jesusluvsyooh
Aug 15, 2025 18:35
This issue is back, libMonoPosixHelper.dylib is included, but the codes looking for it in wrong location. (regarding using System.IO.Compression; and DeflateStream)
Root/libMonoPosixHelper.dylib (included, but says cannot be found)
Root/Data/Managed/libMonoPosixHelper.dylib (copy it here, now it can be found)
Dedicated Server build, happens on Unity 2022, and 6000.