Remove the old directories manually before installing it,
That includes at least: Drive, Res, Maps ( voices is inside Res )

The old sygic 9 needs to be removed first aswell.

If you cannot do it from the file manager, open the X-Terminal and type

~$ cd MyDocs
~/MyDocs$ rm -r Drive Res Maps
~/MyDocs$

( the stuff before and including the $ is the prompt, not what you type )