OK IM DUM!
- Discovered Bug (unabled to delete saveslots) just 5 min later this is what happens when I upload a fix without checking everything! ARGGGGGGGGGGGGGGGGGGGG
This is a quick fix that will be avaliable in the next patch or update!
If you cannot wait for that then you can manually delete within [User > (username) > AppData > Roaming > If Endless Worlds > saves > (yoursavefile.tres)