@KroMignon , thank you, it launched, but does the same, pops up in the launch bar then disappears very quickly.
I was in the Qt folder which on my system is:
/Users/sy/Qt
I then typed:
Qt\ Creator.app/Contents/MacOS/Qt\ Creator -noload all -load core
Result:
sy@Simons-iMac Qt % Qt\ Creator.app/Contents/MacOS/Qt\ Creator -noload all -load core
The plugin "core" does not exist.
Usage: Qt Creator [OPTION]... [FILE]...
Options:
-help Display this help
-version Display program version
-client Attempt to connect to already running first instance
-settingspath <path> Override the default path where user settings are stored
-installsettingspath <path> Override the default path from where user-independent settings are read
-temporarycleansettings Use clean settings for debug or testing reasons
-pid <pid> Attempt to connect to instance given by pid
-block Block until editor is closed
-pluginpath <path> Add a custom search path for plugins
-load <plugin> Load <plugin> and all plugins that it requires
-load all Load all available plugins
-noload <plugin> Do not load <plugin> and all plugins that require it
-noload all Do not load any plugin (useful when followed by one or more "-load" arguments)
-profile Profile plugin loading
-no-crashcheck Disable startup check for previously crashed instance
Plugin: Core
-color <color> Override selected UI color
-theme <default|dark> Choose a built-in theme or pass a .creatortheme file
-presentationMode Enable presentation mode with pop-ups for key combos
Plugin: Debugger
-debug <pid> Attach to local process
-debug <executable>[,kit=<kit>][,terminal={0,1}][,sysroot=<sysroot>]
Start and debug executable
-debug [executable,]core=<corefile>[,kit=<kit>][,sysroot=<sysroot>]
Attach to core file
-debug <executable>,server=<server:port>[,kit=<kit>][,sysroot=<sysroot>]
Attach to remote debug server
-wincrashevent <eventhandle:pid>
Event handle used for attaching to crashed processes
Plugin: Git
-git-show <git commit hash> Show given commit hash
Plugin: ProjectExplorer
-customwizard-verbose Verbose loading of custom wizards
-ensure-kit-for-binary <file path>
Create kit with architecture matching a given application or library
-lastsession Restore the last session
<session> Restore a saved session
Plugin: QmlDesigner
-capture-puppet-stream <capture file>
Captures the Qml Puppet stream
Plugin: Welcome
-notour Do not ask for taking a UI tour on startup
However, I then tried:
sy@Simons-iMac Qt % Qt\ Creator.app/Contents/MacOS/Qt\ Creator -noload all -load Core
Which fixes the issue, core has to be Core. But the only tab showing is Edit, how do I fix?
When I tried to open my 'pro' file a dialog with an exclamation icon is displayed with the text:
Could not open "/users/sy/XMLMPAM/XMLMPAM.pro.user": Cannot open files of type "application/xml".
I then launched the Maintenance Tool then removed everything. Then from my profile I checked for files and folders and found .config, I went into this folder and found the folder QtProject, which contained several Qt Creator specific files, I removed the QtProject folder and its contents then reinstalled Qt.
That worked!