I'd guess something's wrong with myapp. I just verified that open does start Classic apps (ran the OS 9 versions of SimpleEdit and Graphing Calculator using it fine). 

perl -le 'system( "open", "/Applications (Mac OS 9)/Graphing Calculato
+r" )'

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In reply to Re^3: How to run MacOS Classic app in OSX? system() can't run it.. by Fletch
in thread How to run MacOS Classic app in OSX? system() can't run it.. by Anonymous Monk

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