I have a fresh installation of the version 2.1.2-1 on Windows. When I try to import demo application "Address Book for Angular 2" (as per instructions in the readme), nothing happens. The list of applications does not get any new app, but the error.log of the web server says:
[Fri Jun 10 12:01:39.661406 2016] [:error] [pid 9272:tid 1348] [client 127.0.0.1:26700] REST Exception #404 > Record not found, referer: ...127.0.0.1/dreamfactory/dist/index.html
[Fri Jun 10 12:01:40.068632 2016] [:error] [pid 9272:tid 1364] [client 127.0.0.1:26698] REST Exception #501 > Database or driver does not support fetching all stored procedure names., referer: ...127.0.0.1/dreamfactory/dist/index.html
[Fri Jun 10 12:01:40.069609 2016] [:error] [pid 9272:tid 1364] [client 127.0.0.1:26698] REST Exception #501 > Database or driver does not support fetching all stored function names., referer: ...127.0.0.1/dreamfactory/dist/index.html
If it helps, it happens after data import, as the 4 'Local SQL Database' tables get populated correctly, as it seems.
Note: Some time ago I did exactly the same with the previous version (2.1.0-4) and it worked fine, imported the app and the app worked okay.