How to use the "Regenerate examples" targets:

Set the value of the project build setting ANTLR_EXTRA_JAVA_ARGS
to the Java classpath containing the .jar files from the ANTLR v3 beta distribution.
The value will be used as the argument to the -cp parameter of /usr/bin/java.
See the individual "Regenerate" targets for the specifics.

Also be sure that all necessary files are writeable, otherwise the build will fail silently
because org.antlr.Tool currently always returns 0 as its exit code, no matter what - even if a fatal error occured.
This is a serious issue when using the plugin, as well, and will be fixed in a future release.

The Xcode plugin has not been updated to recognize the new recommended file extensions for ANTLR grammars:
Parsers and combined grammars:	.g		generate NameLexer.(h|m) and NameParser.(h|m) files
Lexers:							.gl 		generate NameLexer.(h|m) files
Parser grammars (alternatively): 	.gp		generate NameParser.(h|m) files
Treeparsers: 							.gtp		generate Name.(h|m) files (this has changed from the previous release!!)

It should continue to work but there are no guarantees. Sometime in the near future I will make updates available
and announce them on the mailing list antlr-interest@antlr.org and on my site http://classdump.org/pages/antlr

Share and enjoy.

-k