And this is what it looks like as of this morning, when I started up Zbrush:
I really have no idea what hapened http://zbrushcentral.com/zbc/images/smilies/redface2.gif. Haven't done anything strange with it at all. Still having a minor hope though that this could be fixed - it still looks good on the preview of the file in Zbrush.
//Very greatfull for any help