After customize some fields in WSP and try to run pdm_publish the following error appear:
Verifying Server CA Service Desk Manager is not running...
AHD04756: can't open wsp_schema.log for output at .pdm_publish.pl line 594
pdm_publish execution failed
This issue occurs because the command to run the publication needs administrator rights.
1. Open command prompt by right clicking on command prompt icon and select 'Run as administrator'.
2. Run pdm_publish
Doc Title: "Web Screen Painter schema modification - How it works and what to check if it goes wrong."
Document ID : KB000025524