Open Source Document Management System | OpenKM

I there a way to automatically delete files on upload? I batch upload from zip file and need to automatically delete thumbs.db when it is uploaded.

You can doing it with automation ( events ) based on document creation. Take a look at these url:
http://wiki.openkm.com/index.php/Automation
http://wiki.openkm.com/index.php/Enable_automation
http://wiki.openkm.com/index.php/Extend_automation_6.0

I suggest you download openkm portable what comes with some sample http://sourceforge.net/projects/openkmportabledev/

Yes, unfortunately the automation doesn't work like I assumed it would, I did a validation of "NameContains" and added an action of "AddKeyword" of "delete" but does not appear to work. Since it is just me using OpenKm, does not seem worth the effort.

Nevermind, after I restarted the service it now appears to work. Thanks.

Should not be necessary restarting service to take it running, I suspect there was something else. You can debug your validation and action classes and also the AutomationManager -> method getValidActions