Couldn't find executable named rqt_graph

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I'm running on ubuntu 14.04 indigo. since I don't have Internet access from the computer that I am working on, therefore I cannot use sudo apt-get ... commands. Therefore, I used a usb to transfer all the files. I used this link to make sure I am downloading the right for my system.

I built rqt(0.4.8) and rqt_graph(0.4.8) from the source, when I ran catkin_make, it builts successfully. However, when I try to ran rosrun rqt_graph rqt_graph

it shows me the following:

/catkin_ws$ rosrun rqt_graph rqt_graph

[rosrun] Couldn't find executable named rqt_graph below /home/administrator/catkin_ws/src/rqt_graph

[rosrun] Found the following, but they're either not files,

[rosrun] or not executable:

[rosrun] /home/administrator/catkin_ws/src/rqt_graph

[rosrun] /home/administrator/catkin_ws/src/rqt_graph/src/rqt_graph

[rosrun] /home/administrator/catkin_ws/src/rqt_graph/scripts/rqt_graph

So I went into rqt_graph/script/rqt_graph and made it into an executable, then I ran rosrun rqt_graph rqt_graph again, and it gave me the following:

RosPluginProvider.load(rqt_graph/RosGraph) exception raised in __builtin__.__import__(rqt_graph.ros_graph, [RosGraph]): Traceback (most recent call last):

File "/home/administrator/catkin_ws/src/rqt_gui/src/rqt_gui/ros_plugin_provider.py", line 77, in load module = __builtin__.__import__(attributes['module_name'], fromlist=[attributes['class_from_class_type']], level=0) File "/home/administrator/catkin_ws/src/rqt_graph/src/rqt_graph/ros_graph.py", line 38, in <module> from python_qt_binding.QtWidgets import QCompleter, QFileDialog, QGraphicsScene, QWidget

ImportError: No module named QtWidgets

PluginManager._load_plugin() could not load plugin "rqt_graph/RosGraph": Traceback (most recent call last):

File "/home/administrator/catkin_ws/src/qt_gui/src/qt_gui/plugin_handler.py", line 99, in load self._load()

File "/home/administrator/catkin_ws/src/qt_gui/src/qt_gui/plugin_handler_direct.py", line 54, in _load self._plugin = self._plugin_provider.load(self._instance_id.plugin_id, self._context)

File "/home/administrator/catkin_ws/src/qt_gui/src/qt_gui/composite_plugin_provider.py", line 71, in load instance = plugin_provider.load(plugin_id, plugin_context)

File "/home/administrator/catkin_ws/src/qt_gui/src/qt_gui/composite_plugin_provider.py", line 71, in load instance = plugin_provider.load(plugin_id, plugin_context)

File "/home/administrator/catkin_ws/src/rqt_gui_py/src/rqt_gui_py/ros_py_plugin_provider.py", line 60, in load return super(RosPyPluginProvider, self).load(plugin_id, plugin_context)

File "/home/administrator/catkin_ws/src/qt_gui/src/qt_gui/composite_plugin_provider.py", line 71, in load instance = plugin_provider.load(plugin_id, plugin_context)

File "/home/administrator/catkin_ws/src/rqt_gui/src/rqt_gui/ros_plugin_provider.py", line 83, in load raise e

ImportError: No module named QtWidgets

Anyone got suggestions on how I should fix this?