Did you write a game name &/or company name in the game/company text input boxes on the main game settings area of the editor? If so do any of them contain special characters or that you haven't accidentally included white space at the end of either of the names.
Also, try to keep the path/names of the files in English & avoid special characters/symbols.
I don't know if that's the reason for your issues, but I can tell you that it's the viseditor.log file you should look at in regards to editor related issues & not the messages.log file which is to do with the game while it is running.