title: Kivy-designer is not working
body: <p>I'm using a kivy over pycharm. I want to install a kivy designer to take advantage of Kivy's visual interface features. I installed the kivydesigner as written in the document with python3 but when I run it, I get an error like the following below ; the popup comes on the screen and closes immediately.</p>
  
  <p>Thank you in advance for your help.</p>
  
  <pre><code>stranger@paradise-citys-grasses:~/kivy-designer$ python3 -m designer
  [INFO   ] [Logger      ] Record log in /home/stranger/.kivy/logs/kivy_17-09-29_72.txt
  [INFO   ] [Kivy        ] v1.10.0
  [INFO   ] [Python      ] v3.5.3 (default, Sep 14 2017, 22:58:41)
  [GCC 6.3.0 20170406]
  [INFO   ] [Factory     ] 194 symbols loaded
  [INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
  [INFO   ] [Text        ] Provider: sdl2
  [INFO   ] [OSC         ] using &lt;multiprocessing&gt; for socket
  [INFO   ] [Window      ] Provider: sdl2(['window_egl_rpi'] ignored)
  [INFO   ] [GL          ] Using the "OpenGL" graphics system
  [INFO   ] [GL          ] Backend used &lt;gl&gt;
  [INFO   ] [GL          ] OpenGL version &lt;b'3.0 Mesa 17.0.7'&gt;
  [INFO   ] [GL          ] OpenGL vendor &lt;b'X.Org'&gt;
  [INFO   ] [GL          ] OpenGL renderer &lt;b'Gallium 0.4 on AMD CEDAR (DRM 2.49.0 / 4.10.0-35-generic, LLVM 4.0.0)'&gt;
  [INFO   ] [GL          ] OpenGL parsed version: 3, 0
  [INFO   ] [GL          ] Shading version &lt;b'1.30'&gt;
  [INFO   ] [GL          ] Texture max size &lt;16384&gt;
  [INFO   ] [GL          ] Texture max units &lt;16&gt;
  [INFO   ] [Window      ] auto add sdl2 input provider
  [INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
  [WARNING] [FileNotFoundError] [Errno 2] No such file or directory: '/home/stranger/.kivy/garden/garden.xpopup/xpopup.mo'. Switch to the defaults.
  [INFO   ] [Clipboard   ] Provider: gtk3(['clipboard_dbusklipper'] ignored)
  xclip version 0.12
  Copyright (C) 2001-2008 Kim Saunders et al.
  Distributed under the terms of the GNU GPL
  [INFO   ] [Cutbuffer   ] Provider: xclip
  [INFO   ] [CutBuffer   ] cut buffer support enabled
  Parçalama arızası (çekirdek döküldü)
  </code></pre>
  
  <p>Last line is Turkish. It means "Crushing failure (core breakdown)". </p>