C:\>grass64

OSGEO4W home is C:\PROGRA~1\QGISDU~1
Traceback (most recent call last):
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3/etc/wxpython/gis_set.py", li
ne 1002, in <module>
    GRASSStartUp = StartUp(0)
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\site-packages\wx-2.8-msw-unicode\
wx\_core.py", line 7981, in __init__
    self._BootstrapApp()
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\site-packages\wx-2.8-msw-unicode\
wx\_core.py", line 7555, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3/etc/wxpython/gis_set.py", li
ne 977, in OnInit
    StartUp = GRASSStartup()
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3/etc/wxpython/gis_set.py", li
ne 171, in __init__
    self._set_properties()
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3/etc/wxpython/gis_set.py", li
ne 221, in _set_properties
    not os.path.isdir(os.path.join(self.gisdbase, location)):
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\ntpath.py", line 73, in join
    elif isabs(b):
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\ntpath.py", line 57, in isabs
    s = splitdrive(s)[1]
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\ntpath.py", line 125, in splitdri
ve
    if p[1:2] == ':':
TypeError: 'NoneType' object has no attribute '__getitem__'
Traceback (most recent call last):
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3/etc/wxpython/wxgui.py", line
 34, in <module>
    from lmgr.frame import GMFrame
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\lmgr\frame.py",
 line 46, in <module>
    from lmgr.layertree        import LayerTree, LMIcons
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\lmgr\layertree.
py", line 37, in <module>
    from mapdisp.frame       import MapFrame
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\mapdisp\frame.p
y", line 38, in <module>
    from vdigit.toolbars    import VDigitToolbar
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\vdigit\toolbars
.py", line 23, in <module>
    from vdigit.main        import VDigit
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\vdigit\main.py"
, line 18, in <module>
    from vdigit.wxdigit import IVDigit, GV_LINES
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\vdigit\wxdigit.
py", line 33, in <module>
    from vdigit.wxdisplay import DisplayDriver
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\wxpython\vdigit\wxdispla
y.py", line 28, in <module>
    from grass.lib.gis    import *
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\python\grass\lib\gis.py"
, line 23, in <module>
    _libs["grass_gis.6.4.3"] = load_library("grass_gis.6.4.3")
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\python\grass\lib\ctypes_
loader.py", line 55, in load_library
    return self.load(path)
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\python\grass\lib\ctypes_
loader.py", line 221, in load
    return _WindowsLibrary(path)
  File "C:\PROGRA~1\QGISDU~1\apps\grass\grass-6.4.3\etc\python\grass\lib\ctypes_
loader.py", line 207, in __init__
    self.cdll = ctypes.cdll.LoadLibrary(path)
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\ctypes\__init__.py", line 443, in
 LoadLibrary
    return self._dlltype(name)
  File "C:\PROGRA~1\QGISDU~1\apps\Python27\lib\ctypes\__init__.py", line 365, in
 __init__
    self._handle = _dlopen(self._name, mode)
WindowsError: [Error 127] Uvedenß procedura nebyla nalezena

C:\>