Usability Analysis of Configurator User Interfaces with Multimodal Large Language Models. - Sebastian Lubos; Alexander Felfernig; Damian Garber; Adnan Kraljic; Tarik Kraljic; Viet-Man Le; Thi Ngoc Trang Tran; Gerhard Leitner; Julian Schwazer; Doris Suppan; Reinhard Willfort; Ivan Dukic; et al. (CoRR, 2026)