I am trying to compile Jakarta Slide from CVS (version 2.0, probably) using ANT 1.4.1 and keep getting a common error which reads like: BUILD FAILED C:installsjavajakarta-slide-2.0 uild.xml:663: Could not create task of type: antlr. Common solutions are to use taskdef to declare your task, or, if this is an optional task, to put the optional.jar in the lib directory of your ant installation (ANT_HOME). I tried adding the antlr.jar and antlr-tools.jar to the CLASSPATH but it didn't change anything. My environment is JDK 1.3.0 (from JBuilder 4), Windows 2000. Can someone tell what should I do to fix this?    More>>

			

			BUILD FAILED
			

			

			C:installsjavajakarta-slide-2.0 uild.xml:663:
			

			Could not create task of type: antlr. Common
			

			solutions are to use taskdef to declare your task, or,
			

			if this is an optional task, to put the optional.jar
			

			in the lib directory of your ant installation (ANT_HOME).