ZAM 7.5 on Windows 2003 - Standard Install for Testing

I'm having problems getting Linux Desktop or Server to show up under
Workstation Inventory. I have discovered the device and install the
client as per the following:

../tscclient-install –s xxx.xx.xx.x

After I run the SysInfo it reports that there should be a license but will
work for 30 days. On the ZENWorks Asset Management Manager, I get an alert
that says “License Limit”