The KivyDesigner installation docs reads:
To install the FileBrowser, enter a console (on Windows use kivy.bat in the kivy folder):garden install filebrowser
[WARNING ] stderr: KeyError: 'kivy.garden.filebrowser'
C:\>garden install filebrowser
C:\>python.exe C:\Program Files (x86)\Python34-32\Scripts\garden install filebrowser
python.exe: can't open file 'C:\Program': [Errno 2] No such file or directory
1.download filebrowser from github
2.rename init.py in filebrowser to filebrowser.py
3.copy filebrowser.py to /kivy-designer/designer/
4.edit /kivy-designer/designer/apps.py in about line 17:
from filebrowser import FileBrowser
[...]
[WARNING ] stderr: Traceback (most recent call last):
[WARNING ] stderr: File "C:\Program Files (x86)\Python34-32\lib\runpy.py", line 170, in _run_module_as_main
[WARNING ] stderr: "__main__", mod_spec)
[WARNING ] stderr: File "C:\Program Files (x86)\Python34-32\lib\runpy.py", line 85, in _run_code
[WARNING ] stderr: exec(code, run_globals)
[WARNING ] stderr: File "C:\Program Files (x86)\Python34-32\Lib\kivy-designer\designer\__main__.py", line 3, in <module>
[WARNING ] stderr: from designer.app import DesignerApp
[WARNING ] stderr: File "C:\Program Files (x86)\Python34-32\Lib\kivy-designer\designer\app.py", line 11, in <module>
[WARNING ] stderr: from designer.components.dialogs.add_file import AddFileDialog
[WARNING ] stderr: File "C:\Program Files (x86)\Python34-32\Lib\kivy-designer\designer\components\dialogs\add_file.py", line 5, in <module>
[WARNING ] stderr: from kivy.garden.filebrowser import FileBrowser
[WARNING ] stderr: File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
[WARNING ] stderr: File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
[WARNING ] stderr: File "<frozen importlib._bootstrap>", line 1191, in _load_unlocked
[WARNING ] stderr: File "<frozen importlib._bootstrap>", line 1163, in _load_backward_compatible
[WARNING ] stderr: KeyError: 'kivy.garden.filebrowser'