It looks like you have an illegal character in your XML file making it unreadable to NetBeans. Did you edit it?
The UI removal was announced here https://www.codenameone.com/blog/removing-old-preferences.html -- You received this message because you are subscribed to the Google Groups "CodenameOne Discussions" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/codenameone-discussions. To view this discussion on the web visit https://groups.google.com/d/msgid/codenameone-discussions/785be159-1346-4d49-837b-f309e325a500%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
