for clarification, vwlan is based on ubuntu. But the system comes out-of-the box as virtual appliance. So you only need to download the .ova/f file and import that one in your vmware infrastructure (deploy ova/ovf template). If you completed that step, please turn on the virtual machine and open the console - you should see the system booting!
If you do not see the system booting,I think you have a problem with your vmware environment. You should at least see the bios boot-screen - independent what system is installed.
Actually, I was fortunate enough to have Adtran support help me regardless of not having an AP registered to this box yet. It turns out it was the system clock being mis-set. In the Bios the system clock was set for approx. a year ago, which prevented the Virtual Appliance from booting.
I would further add to what p.felsner said and mention that you have input something (ie. click the console screen and press enter) generally for any output to display. You should also see IP information in the summary tab of the virtual host.