Fix an exception on wx-3.0-gtk3 in PLCOpenEditor when generating ST files.

On Python2.7 with WX3.0 and GTK3, an assertionError rises on generating a ST file if the name is already set. The first generation works without problems, if you generate the file a second one, PLCOpenEditor tries to open the file
save dialog with the pre entered name from last run. Then the following assertion pops up:

PyAssertionError: C++ assertion "volDummy.empty() && pathDummy.empty()" failed at ./src/common/filename.cpp(568) in Assign(): the file name shouldn't contain the path

This fix reduces the filepath of the ST file the to the filename. Now it works fine.

     1

from __future__ import absolute_import

     2

     3

from etherlab.etherlab import *

     4

from util.BitmapLibrary import AddBitmapFolder

     5

import util.paths as paths

     6

     7

AddBitmapFolder(os.path.join(paths.AbsDir(__file__), "images"))