Hi, I have problems installing MacRuby on my iMac. On an empty disk, I proceed as follow, in order: Install OS: 10.7.4 (11E53) Install Xcode 4.3.3 for Lion which ask for installing "Mobile Divice Framework", I do it, restart Xcode, quit it. Looking for files containing "macruby", I find a lot in "/System/Library/PrivateFrameworks/" and "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/System/Library/PrivateFrameworks/" folders (seems normal as all are in private frameworks) Launch Xcode, asking for a new Mac application: as expected, no MacRuby template is proposed. I cancel. Asking Xcode>Preferences>Download, I download "Command Line Tool" Ask for Xcode location to install support: claude-chertons-imac:~ claudecherton$ xcode-select -print-path => /Applications/Xcode.app/Contents/Developer Installing MacRuby 0.12 Launching Xcode, create a new application MacRuby template is there, I choose it No MacRuby.framework is found: it appears in red in Application Target>Linked Frameworks and Libraries Looking for files containing "macruby" I find "MacRuby.framework" in "/Library/Frameworks" I can delete the missing framework reference an make File>Add file to add the MacRuby.framework from the location found above Trying to execute a small test, I get the message 'MacRuby/MacRuby.h' file not found for the line #import <MacRuby/MacRuby.h> Looking at Xcode/contents structure discourage me to try further to fix problems. However, I would be happy to run MacRuby on Xcode 4 (all attempts I did before with Xcode 4.1 and 4.2, MacRuby 0.10 and 0.12 were without success despite the time I spend on internet to find a solution. I would be grateful for any help! Claude C.