Got the same problem...
Mac OSx 10.15.3
I have the same, using Windows in Parallels to create a bootable USB for now.
sudo dd if=LibreELEC-RPi4.arm.img of=/dev/diskX bs=1m^ the low-tech method for macOS and Linux
I need to blow the dust off the VM that I have used to replicate building the creator app and if I can persuade someone with a clue about macOS and Qt development to poke the code. I can't promise a quick fix 
Does this error help?
pabreu@Paulos-iMac:~/Downloads/LibreELEC USB-SD Creator.app/Contents/MacOS $ sudo ./LibreELEC\ USB-SD\ Creator
Password:
2020-08-16 10:22:12.052 LibreELEC USB-SD Creator[63762:3818003] The application with bundle ID com.apple.ScriptEditor.id.LibreELEC is running setugid(), which is not allowed. Exiting.This is in the Terminal. I cd to LibreELEC USB-SD http://Creator.app/Contents/MacOS and try to run it from there.
So perhaps setguid has been disable even for root in macos?
For those who happened to be here looking for a solution to install from OSX (Catalina in my case), here is a guide that worked: Installation [LibreELEC.wiki]
For those who happened to be here looking for a solution to install from OSX (Catalina in my case), here is a guide that worked: Installation [LibreELEC.wiki]
Hi! Thanks for the guide, but I can´t follow it. I tried to find the file you mention (LibreELEC-build-architecture-version.img.gz), but unsuccessfully. I asked Finder to "Show Package Contents", and look into all folders, but nothing. Where is it?
Same problem here. Until there's a fix, the workaround is
$ gunzip LibreELEC-RPi2.arm-9.2.6.img.gz$ diskutil list
<snip>
/dev/disk2 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *32.0 GB disk2
1: DOS_FAT_32 32G 32.0 GB disk2s1$ sudo diskutil unmountDisk /dev/disk2
Unmount of all volumes on disk2 was successful$ sudo dd if=LibreELEC-RPi2.arm-9.2.6.img of=/dev/disk2 bs=1m
549+0 records in
549+0 records out
575668224 bytes transferred in 168.306795 secs (3420350 bytes/sec)That should do it.
For those who happened to be here looking for a solution to install from OSX (Catalina in my case), here is a guide that worked: Installation [LibreELEC.wiki]
We cannot access the link you mentioned here: https://wiki.libreelec.tv/installation#i…g_using_mac_osx --> "This site can’t be reachedwiki.libreelec.tv’s server IP address could not be found."
I created a ticket to simplify the discussion - [BUG] The application with bundle ID com.apple.ScriptEditor.id.LibreELEC is running setugid(), which is not allowed · Issue #4681 · LibreELEC/LibreELEC.tv · GitHub
Alternative for mac users is to flash the img file using the tool - balenaEtcher - Flash OS images to SD cards & USB drives
For those who happened to be here looking for a solution to install from OSX (Catalina in my case), here is a guide that worked: Installation [LibreELEC.wiki]
That guide does not work for macos Catalina 10.15.7 (19H524)
It is not possible to launch the app.
I tried to run it on the command line, with and without sudo. It seems to want to run setgid at some point, which macos does not like. Shades of Windows 8.
This
$ /Applications/LibreELEC\ USB-SD\ http://Creator.app/Contents/MacOS/applet
causes a pop-up to ask for an admin user's password
Then there appears a pop-up window from the LibreElec app containing (and an Edit button):
PasteBoard: Error creating pasteboard: com.apple.pasteboard.clipboard [-4960]
PasteBoard: Error creating pasteboard: com.apple.pasteboard.find [-4960]
2021-02-27 16:30:20.729 LibreELEC USB-SD Creator[40871:5505930] The application with bundle ID com.apple.ScriptEditor.id.LibreELEC is running setugid(), which is not allowed. Exiting. (1)Clicking on Edit launches the macos Script Editor with this:
-- https://discussions.apple.com/message/23355413#23355413
-- https://discussions.apple.com/thread/133512?start=0&tstart=0
set myPath to POSIX path of (path to me as text) -- gets it in "/" form
set ASTID to AppleScript's text item delimiters -- save 'em
set AppleScript's text item delimiters to "/"
set theFolder to (text 1 thru text item -2 of myPath) & "/" as Unicode text
set AppleScript's text item delimiters to ASTID -- restore 'em
set execpath to theFolder & "Contents/MacOS/LibreELEC USB-SD Creator"
set quotedexec to quoted form of execpath
do shell script "sudo " & quotedexec with administrator privileges
So I suppose it is the last line that causes the problems.
Please test Dropbox - LibreELEC.USB-SD.Creator.macOS.dmg - Simplify your life which has changes to work on macOS Catalina, and in theory the app is signed (though not with an Apple-trusted cert). There are still issues with downloading some image types so stick with standard stuff like Generic/RPi4 .. and use 'show all' to list beta images.
The DMG is unhappy, but I can force it to open
But, the app seems to be corrupted in some way
I'll try the "low-tech" way
There is nothing wrong with the app, only the untrusted signature. It seems there is no alternative to paying for the Apple developer account so the image can be signed with a trusted cert.
sudo dd if=LibreELEC-RPi4.arm.img of=/dev/diskX bs=1mThis didn't worked
I tried using "Raspberry Imager" and it worked like a charm!
Clean UI
balenaEtcher worked for me. Thanks cmoulliard
Alternative for mac users is to flash the img file using the tool - balenaEtcher - Flash OS images to SD cards & USB drives
This is THE answer. Download the image you need to build and use balenaEtcher to flash it. Works like a charm.
