www.neuron.yale.edu

So far I used Neuron 7.1 at Windows OS. I was asked to install Neuron 7.3 at OS X 10.8.4 of macbook. As explained at the instruction I copied NEURON 7.3 folder into the Application folder. Next I tried to run hoc file I made using Neuron 7.1 at Windows OS. But I got the error like below figure. It’s the first time of using NEURON at OS X. I am not sure what was wrong. Could you give me a comment about this error?

Have you already installed Apple's developer tools? If not, uninstall NEURON, install the developer tools, then reinstall NEURON.