Guest, guest and Zippy and other posters before:
First of all, thanks for the complements.
@Guest:
I didn't release the program yet because I made the tracks preview list (the bottom list that shows up with a click on the button "show tracklist") resizable, but I don't like it's default implementation. I tried to change it and got very close to what I wanted, but I didn't get there (yet) and that caused me frustrations (yeah, that's my character...). Therefore I now use the default resizable solution and don't like it, but I guess I'll put it in the next release anyway.
I thought of making a web page with up-to-date screenshots, features, how-to and requirements, but I didn't yet have the courage to do that. And I don't have a lot of time either.
@guest:
The problem with the missing/corrupt characters has been fixed (I had to include a script property that I didn't know the use for, previously). The "encoding" for e.g. Amazon will now have to be explicitely mentioned in the script file:
Amazon and AllMusicGuide should now both work fine. If you have another script file with the same problem, add this encoding property, or if it is already there, remove it. If this fixes it, please let me know. If not, please let me know too

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@Zippy:
The exception occasionally happened to me before (MM problem?), but a restart of MediaMonkey fixes it normally. Does that work for you?
When MM is closed and I click GetFromMediaMonkey all goes well.
MM starts up then, right?
To put the Discogs style in the Custom1 field, go to the options, check the Custom1 checkbox and enter %style% as mask. (that's what you did)
I also can't mark "style" on the main screen
There's no need to. You did everything as supposed. Maybe WST isn't writing the tags because the Album Art checkbox (main screen) isn't checked. A bug (that is now fixed but not yet released) required that. Also make sure that the tracks that you want to tag(update) are checked in the tracks preview list (bottom list in main view) and that tracks are matched (tracknumber is filled next to the checkbox --> no "?")
Cheers
Steegy