[GRASS-dev] Problem starting GRASS GUI - ntpath splitdrive

[Pedro Venâncio]

Hi Helmut,



Helmut Kudrnovsky <hellik  web.de> escreveu no dia terça, 6/11/2018 à(s)
19:24:

> >C:\>grass74
> >Cleaning up temporary files...
> >Starting GRASS GIS...
> >ERROR: Invalid return code from GUI startup script.
> >Please advise GRASS developers of this error.
> >Exiting...
> >Press any key to continue . . .
>
> what is the invalid return code?
>


The error falls here, like Markus said:

def gui_startup(grass_gui):
    """Start GUI for startup (setting gisrc file)"""
    if grass_gui in ('wxpython', 'gtext'):
        ret = call([os.getenv('GRASS_PYTHON'), wxpath("gis_set.py")])

    # this if could be simplified to three branches (0, 5, rest)
    # if there is no need to handle unknown code separately
    if ret == 0:
        pass
    elif ret in [1, 2]:
        # 1 probably error coming from gis_set.py
        # 2 probably file not found from python interpreter
        # formerly we were starting in text mode instead, now we just fail
        # which is more straightforward for everybody
        fatal(_("Error in GUI startup. See messages above (if any)"
                " and if necessary, please"
                " report this error to the GRASS developers.\n"
                "On systems with package manager, make sure you have the
right"
                " GUI package, probably named grass-gui, installed.\n"
                "To run GRASS GIS in text mode use the -text flag.\n"
                "Use '--help' for further options\n"
                "     {cmd_name} --help\n"
                "See also:
https://grass.osgeo.org/{cmd_name}/manuals/helptext.html").format(
                    cmd_name=cmd_name))
    elif ret == 5:  # defined in gui/wxpython/gis_set.py
        # User wants to exit from GRASS
        message(_("Exit was requested in GUI.\nGRASS GIS will not start.
Bye."))
        sys.exit(0)
    else:
        fatal(_("Invalid return code from GUI startup script.\n"
                "Please advise GRASS developers of this error."))



>
> is there another python installation on this windows system?
>
>
Yes, I've Python 2.7 and Python 3.7, both instaled with OSGeo4W, one for
QGIS 2.18 and another for QGIS 3.4. But I've the same on another machine.



> >The strange thing is that both systems are similar, and it works in one,
> and not in another.
>
> can you delete all the content in:
>
> C:\Users\YourUserName\AppData\Roaming\GRASS7
>
> and try to restart
>
>
I already tested this, but after delete it, it only create an empty GRASS7
folder.



>
> what is happening when you're in text mode and do
>
> C:\>g.gui wxpython
>
> ?


C:\>g.gui wxpython
Launching <wxpython> GUI in the background, please wait...
C:\>

but it does not launch the GUI. Looking at the windows task manager
processes, the GRASS GUI process shows up, but closes right after a second
or so.

Thank you very much for the help Helmut and Markus!

Best regards,
Pedro
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