First of all, for those liking the new Velious UI, great!
I mistakenly thought that this was to become the new standard default UI and made changes accordingly. I know some of you use the default UI (the frilly filigree version) and some use the default old (the old default_old UI) and have experienced issues with getting these UI's to work with the new style spell gems.
Last night I fixed the filigree version of the default as a temporary fix but I am aiming to actually fix both versions tomorrow and have them as full UI downloads , although both will still contain the new spell gem system in accordance to the changes on Project1999. The frilly default UI would be considered 'default' with the Velious and default_old as optional use UI's.
For people with custom UI's nothing has really changed except that you will no longer have the right spell gem showing for the spell you have loaded. I released a basic set of square icons that can be used as a temporary fix
here until such time that your UI modder updates their UI to match.