If you are really sure that you created the project in the same computer, you can do these things:
1) Open Cube and create a new project in that Ubuntu 14.04 computer
2) Close Cube
3) Open HOME/cube-system/projects folder
4) Delete [new project]/data/list and [new project]/data/packages folder
5) Copy [old project]/data/list and [old project]/data/packages folder to [new project]/data folder
6) Open Cube and open the new project
If you are really sure that you created the project in the same computer, you can do these things: system/ projects folder /data/packages folder /data/packages folder to [new project]/data folder
1) Open Cube and create a new project in that Ubuntu 14.04 computer
2) Close Cube
3) Open HOME/cube-
4) Delete [new project]/data/list and [new project]
5) Copy [old project]/data/list and [old project]
6) Open Cube and open the new project