> I don't remember the details, but originally had the same trouble. I think a "/" at the end of a url got me somewhere. 
> I have defined...
> 
> URL = http://somewhere.edu/elog
> 
> ...in the config file, and my redirect looks like this:
> 
> Redirect /elog http://somewhere.edu/elog/
> ProxyPass /elog/ http://somewhere.edu:8080/
> ProxyPassReverse /elog/ http://somewhere.edu:8080/


Yes, that did it:  Adding the URL to the config file was the key.

Thanks!