Plug-ins from JBLD retrieve the current date to determine when a demo expires.  Unfortunately, Vectorworks cannot easily report an unformatted date, and there is no way to detect international settings.

In order to use the plug-in in demo mode, the current workaround is to change your Date settings to US, resulting in a mm/dd/yy format.

If you choose to purchase, you will receive a registration code, and you can restore your date settings. 

On the Mac, choose System Preferences>International, Formats, Region: United States.

On windows, choose Control Panel > Regional and Language Options > Advanced > Language for non-Unicode programs... for VW 2008 or below.

Choose Control Panel > Regional and Language Options for VW 2009 and above.