OS X Lion Automator saving scripts in classic mode?

Question

I have an automator application I wrote that uses some basic automator tools and incorporates in some AppleScript, and it saves and runs on my computer correctly (I am running OS X 10.7.5). I emailed it to a colleague running 10.8.4, and when she tried to open it an error appeared: You can't open the application "MyApp" because the Classic environment is no longer supported. From what I understand classic support dropped in way earlier versions of Mac OS, and I don't understand why it should be giving me errors today, nor why my program written on a Lion machine would save in such an old state. Could there be a problem with the AppleScripts I am running? Or with the way I am saving the app?

EDIT
I noticed that when I tried downloading the copy I emailed and running it I experienced the same problem on my machine. It launches fine from my computer, but the version downloaded from my email has the same problem.

Answer 1

Your software may be using Carbon technology which isn't supported anymore

Apple's Old Carbon API, An Upgrade Path from the Classic API

And/or your software may be using Rosetta to translate old Power PC (PPC) code:

Apple Used to Support Rosetta for Power PC (PPC)