Downloaded apache-forrest-0.7.tar.gz and unzipped to my home directory.

Set the environment according to the instructions, ran the build, then
ran "forrest run" from the main directory, opened a browser, went to
localhost:8888/ and got the following error.

Could not find component for role:
[org.apache.cocoon.components.modules.input.InputModule/lm]
(Key='org.apache.cocoon.components.modules.input.InputModule/lm')

Clue, please?