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I see two separate issues here:

1. You have a permissions problem with your ~/.gvfs directory. I suspect you see this warning when you try to tab-complete your package name. I haven't seen this before; you'll probably want to search the Ubuntu forums or just try rebooting.
2. Your environment isn't set up properly in your new terminal. Are you sure you're sourcing the setup.bash for your workspace properly? (Note that with catkin, setting the ROS_PACKAGE_PATH manually is no longer sufficient to tell ROS where your workspace is).