There are some Mac downloaders, 8 to be percise for now.
In lack of the hardware, I can not reproduce by now.
I try to checkout some of my friends.
[update]
I did and sadly I can confirm this problem with Mac OS.
https://github.com/UrsZeidler/shr5rcp/issues/16But mac is not so bad, you could try :
open a terminal,
and cd in the program directory and run the program like this
./run_shr -consolelogand the output should look like this :
urs@valis:~/Downloads/shr-rcp.gtk.linux.x86_64$ ./run_shr -consolelog
ProviderDescriptor: org.eclipse.emf.ecp.workspace.core [157] --> file:/home/urs/Downloads/shr-rcp.gtk.linux.x86_64/plugins/org.eclipse.emf.ecp.workspace.core_1.1.1.20131114-1613.jar
Loading ECPRepositoryManagerImpl from /home/urs/Downloads/shr-rcp.gtk.linux.x86_64/shr_workspace/.metadata/.plugins/org.eclipse.emf.ecp.core/repositories
Loading ECPProjectManagerImpl from /home/urs/Downloads/shr-rcp.gtk.linux.x86_64/shr_workspace/.metadata/.plugins/org.eclipse.emf.ecp.core/projects
!SESSION 2014-03-11 06:41:57.062 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.7.0_51
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=de_DE
Command-line arguments: -os linux -ws gtk -arch x86_64 -data shr_workspace/ -consolelog
!ENTRY de.urszeidler.shr5.ecp 1 0 2014-03-11 06:42:00.720
!MESSAGE Begin early startup ...
!ENTRY de.urszeidler.shr5.ecp 1 0 2014-03-11 06:42:00.727
!MESSAGE creating default workspace....
!ENTRY de.urszeidler.shr5.ecp 1 0 2014-03-11 06:42:00.877
!MESSAGE creating ECP project....
UIProviderDescriptor: org.eclipse.emf.ecp.workspace.ui [159] --> file:/home/urs/Downloads/shr-rcp.gtk.linux.x86_64/plugins/org.eclipse.emf.ecp.workspace.ui_1.1.1.20131114-1613.jar
If not, and it's not obvious what might be the problem, you could try additional parameters like
-clean or
-debug http://help.eclipse.org/kepler/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fmisc%2Fruntime-options.htmlgreetings.