bad workers.properties configuration

[Raffaele Viola]

Hi all,

I'm using Apache 2.2.3 and Tomcat 5.5.17 and I want to connect Apache with
Tomcat using mod_jk-1.2.21.

I write this workers.properties

worker.list=default
worker.default.port=8009
worker.default.host=localhost
worker.default.type=ajp13
worker.default.lbfactor=1

But when I try to start Apache in the error_log I read: bad
workers.properties configuration.

What's wrong??

Thanks
Raffo