Recently I received a shiny new Mac which I have been setting up for development. Im using the open source MTASC compiler for some projects which is used for compilation of the SWF files. However after checking out the repository onto my new machine I received this error when running the compiler either from Terminal or from within the ANT script used to build the project:
/Users/craigbeswetherick/Grindhead/clientname/projectname/build.xml:31: Execute failed: java.io.IOException: Cannot run program "../tools/mtasc-1.12-osx/mtasc": error=13, Permission denied
To fix this problem, use Terminal and use the following command to change the permissions granted to MTASC. Type chmod 777
You should now be able to compile SWF’s using MTASC again.

Funny, upon running mtasc, the error I get is:
“Launch of “mtasc” failed: the PowerPC architecture is no longer supported.”
Pretty straightforward error, except I don’t see an intel version of mtasc available anywhere. Do you know where you got your copy? Thanks!
Hmm – sometimes you can get this problem when using old applications no longer supported by OSX. Try using this – http://www.grindheadgames.com/demo/mtasc/mtasc
The binary from above didn’t work for me. But I was able to use the source code here:
http://mtasc.svn.sourceforge.net/viewvc/mtasc/tags/RELEASE_1_15/original/
then compile in it my macbook air. I used the instruction from here http://tech.motion-twin.com/mtasc.html#download. I just commented out the download section. It works!!!