Please document the IDE you are using for development( Eclipse? ). - Version? - Tutorial on Setup of the project within the IDE. - CVS source location. If you do this, I can help with some of these bugs.
Most of this is already documented on the JMeter web-site. See the JMeter Wiki for developer info and using Eclipse.
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/1304