...So, I went and did a few modifications to relevant source files under blocks/jxforms and I'm not sure
how to compile just that. So I rebuilt all Cocoon and then I substituted the newly generated "cocoon-jxforms-block.jar"
It might be easier to test your changes by starting Cocoon with the "cocoon.sh servlet" command (or cocoon.bat) after the build. This uses the built-in (light) version of Jetty and is much more independent from your environment and from previous builds.
Maybe do a "build clean" at some point as well.
...The logs in Tomcat show these exceptions: java.lang.NoClassDefFoundError: org/apache/cocoon/generation/ServiceableGenerator...
Most probably, the CVS version that you're using for the build has changed since you built your jars, and your tomcat installation is out of sync.
Testing the whole thing as described above should help.
-Bertrand
