Envyng is software that installs the latest Nvidia or ATI drivers for your Ubuntu environment.  I decided I miss my compiz cube and thought it must be because I don't have said drivers so I decided to use Envyng.  I have used Envyng in the past and it has always gone swimmingly, but today I get this when I try to launch:

stk@stk-sys76u810:~$ sudo envyng -g
[sudo] password for stk:
Error: "/var/tmp/kdecache-stk" is owned by uid 1000 instead of uid 0.
Error: "/tmp/kde-stkWER1Yo" is owned by uid 1000 instead of uid 0.
Traceback (most recent call last):
File "/usr/share/envyng-qt/envyngqt.py", line 886, in <module>
form = EnvyMainDlg()
File "/usr/share/envyng-qt/envyngqt.py", line 329, in __init__
self.updateTreeModel()
File "/usr/share/envyng-qt/envyngqt.py", line 381, in updateTreeModel
i.setText(0, candidate)
TypeError: argument 2 of QTreeWidgetItem.setText() has an invalid type

I even try the textual format below, via sudo and without(saw some post mentioning sudo wouldn't work with KDE, so even though I am using gnome, thought I would try)

stk@stk-sys76u810:~$ sudo envyng -t

+-------------------------------------------------+
|                                                 |
|             Welcome to EnvyNG                   |
|    Developed by Alberto Milone (aka tseliot)    |
|                                                 |
+-------------------------------------------------+

+-----------------------------------------------------------+
|    EnvyNG Menu                                            |
|                                                           |
|    1 - Install the NVIDIA driver                          |
|                                                           |
|    2 - Uninstall the NVIDIA driver                        |
|                                                           |
|    3 - Install the ATI driver                             |
|                                                           |
|    4 - Uninstall the ATI driver                           |
|                                                           |
|    5 - Restart the Xserver                                |
|                                                           |
|    6 - Restart your computer                              |
|                                                           |
|    7 - Exit                                               |
|                                                           |
|    NOTE: IF THE SCREEN TURNS BLACK, PLEASE TYPE ALT+F1    |
+-----------------------------------------------------------+
Please select one of the activities displayed above and press ENTER:

1
Traceback (most recent call last):
File "interface.py", line 432, in <module>
a.mainMenu()
File "interface.py", line 295, in mainMenu
a.driverMenu('nvidia')
File "interface.py", line 322, in driverMenu
self.driverPage(driver)
File "interface.py", line 216, in driverPage
candidateLen.append(len(details['candidate']))
TypeError: object of type 'NoneType' has no len()
stk@stk-sys76u810:~$ envyng -t

+-------------------------------------------------+
|                                                 |
|             Welcome to EnvyNG                   |
|    Developed by Alberto Milone (aka tseliot)    |
|                                                 |
+-------------------------------------------------+

+-----------------------------------------------------------+
|    EnvyNG Menu                                            |
|                                                           |
|    1 - Install the NVIDIA driver                          |
|                                                           |
|    2 - Uninstall the NVIDIA driver                        |
|                                                           |
|    3 - Install the ATI driver                             |
|                                                           |
|    4 - Uninstall the ATI driver                           |
|                                                           |
|    5 - Restart the Xserver                                |
|                                                           |
|    6 - Restart your computer                              |
|                                                           |
|    7 - Exit                                               |
|                                                           |
|    NOTE: IF THE SCREEN TURNS BLACK, PLEASE TYPE ALT+F1    |
+-----------------------------------------------------------+
Please select one of the activities displayed above and press ENTER:

1
Traceback (most recent call last):
File "interface.py", line 432, in <module>
a.mainMenu()
File "interface.py", line 295, in mainMenu
a.driverMenu('nvidia')
File "interface.py", line 322, in driverMenu
self.driverPage(driver)
File "interface.py", line 216, in driverPage
candidateLen.append(len(details['candidate']))
TypeError: object of type 'NoneType' has no len()
stk@stk-sys76u810:~$