Problem running O2's Exe on OSX 10.8 , fixed using XQuartz

I just tried to run a simple O2 Platform Exe on OSx (which used to work) and got this:



I.e. nothing happened!

Running the same exe under Xamarin Studio, I found this error:



which lead me to this and this thread, where the proposed solution is to install XQuartz



After the download, click on the XQuartz.pkg file



which doesn't need to special install verification bypass:



After the installation



Running the Util - LogViewer v1.0.exe  (in Xamarin Studio) will now work :)



The execution works from the command line:



Including more advanced scripts like the Util - Text Based C# REPL v1.0.exe one