Regnareb

Fixed some bugs with the loading of the xml files in some SVN environment, and I replaced some non-ASCII characters in some files.

Btw, why not write:
```python
        root = None
```
instead of:
```python
        root = "none"
```
on the line 62 of the file RegisterCustomShaders.py? 

If it is because of the 78th line, you should do that instead:
```python
        libVersion = (root or "").find("LibraryVersion")
```
Or juste let the string variable root empty "" instead of "none", it is way better.