I setup my app_config as follows, but am still only getting one CEP2 WU. Am I missing something?

Code:
<app_config>
   <app>
      <name>cep2</name>
      <max_concurrent>4</max_concurrent>
      <fraction_done_exact/>
      <gpu_versions>
          <gpu_usage>.5</gpu_usage>
          <cpu_usage>.4</cpu_usage>
      </gpu_versions>
    </app>
    <project_max_concurrent>8</project_max_concurrent>
</app_config>
Thanks,
redmaw