New computer, fresh install of Windows 7 x64 Professional. Dl'ed zero-k setup (ran as admin) and changed install directory to: T:\Games\Spring
Resulting in the following two messages:
As I understand what happened: Setup installed engine and configured the placement of maps and core ZK files. The lobby failed to install to that directory because of an 'unwritable' directory issue.
opened taskman and traced the process to operating directory: AppData\Local\Apps\2.0\N66X2CD6.RDM\JK8EOQP5.GPK\zero..tion_00000000000000..
Plucked all ZK lobby files from folder and placed them into my directory. Created shortcut from EXE and placed on desktop.
Hope this helps anyone with the same issue. I'd suggest further investigation into the issue and I'm willing to help however I can.