It's because the displayname is written in a weird way, but I fixed it already. I just have to upload the update and you shouldn't have a problem opening it.
The new update is available!
When i load the save in the editor i get invalid item detected:623, im on beta version 1.0.0.9. any ideas? thanks :)
Looks like you have an unknown item. Please upload your save so I can look at it.
I have attached my save, thanks for the help.