Hello, No you shouldn't add every jar to the lib folder. Only those custom classes that your code requires. And if those jars have similar dependencies of their own. But other than this I can't be much of a help, can only tell you that every time we encountered similar issues, we used the IDE to search for the packages that we needed to build as jars and move them to JMeter's lib. When this was done correctly, in beanshell, it worked just like it did in eclipse, if not, we had to tediously debug it.
Adrian S
