since i don't get a answer with a solution, to my posts on my topics of my trouble with the template configuration panel on all RT- Templates for joomla 3, on my localserver,
i try with a clean gantry rocketlauncher, and i get the same issue...
i can't open tne panel and get error 500,
no apache error in apache error-log
i have the last version of mamp... i run over 60 websites... some with RT, j1.5, 2.5 ... without problems...
http://www.mamp.info/en/mamp/index.html
... php 5.4.4... etc...
but gantry's template configuration panel doesn't work...