trying to run jmeter tests on macosx

if you're trying to run jmeter tests on leopard like me, and keep seeing errors such as;

(org.apache.jmeter.assertions.XMLSchemaAssertionTest)java.lang.IllegalArgumentException: http://java.sun.com/xml/jaxp/properties/schemaLanguage

I recommend you to retry after removing ~/Library/Java/Extensions/xerces.jar file. you should keep a copy, because you may need it in future for an another program.