Creative Plots Broken due to new name changes

IGN: MikeMan (was mushroomaniac)
Bug: No longer owner of my plots
Description:
I recently changed my name from mushroomaniac to MikeMan, and when I tried to add someone onto my plot, an error said "You cannot add people to this plot because you are not the owner." But when I /plotme home, it still takes me to my plot. This seems like it could become an issue, so you might want to fix this soon... just saying.