Issue: Since "upgrading" to El Capitan, Dia won't open (icon briefly appears then vanishes).
Error message (when opening via commandline):
(process:45300): Gdk-WARNING **: locale not supported by C library
(process:45300): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
(dia-bin:45300): Gtk-WARNING **: cannot open display: /private/tmp/com.apple.launchd.xxxxxxx/org.macosforge.xquartz:0
Followed instruction on this bug report: https://sourceforge.net/p/dia-installer/support-requests/105/ without success:
Error message following code change suggested in bug report:
(process:44516): Gdk-WARNING **: locale not supported by C library
(process:44516): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
(dia-bin:44516): Gtk-WARNING **: cannot open display: :0
Relevant Version Information:
Has anyone managed to get Dia working with El Capitan?
In case this helps anyone else, a fresh install of XQuartz (https://www.xquartz.org) resolved the issue.
Note: still needed the export DISPLAY=:0 addition at line 39 in the source code.