I got past the error messages thanks to suggestion from vaughan (download file from poem) combined with Dirk's app_info.xml (edited filename to match the downloaded file). Now just waiting to see if the project will send some tasks. This is the app_info.xml currently running...
Code:
<app_info>
<app>
<name>poemcl</name>
<user_friendly_name>POEM++ OpenCL</user_friendly_name>
</app>
<file_info>
<name>poemcl_0.2_x86_64-pc-linux-gnu__opencl_ati_100</name>
<executable/>
</file_info>
<app_version>
<app_name>poemcl</app_name>
<version_num>1</version_num>
<plan_class>opencl_ati_100</plan_class>
<avg_ncpus>0.5</avg_ncpus>
<max_ncpus>1.0</max_ncpus>
<flops>2.1e10</flops>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<cmdline></cmdline>
<file_ref>
<file_name>poemcl_0.2_x86_64-pc-linux-gnu__opencl_ati_100</file_name>
<main_program/>
</file_ref>
</app_version>
</app_info>