This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
The error "User Interface Kernel" (UIK) comes due to failure of reading the desktop file. The desktop file (project name .dsk) which contains screen information, options and adjustments was left open when Concept was closed the error "UIK" appears.
The error can be fixed by deleting the .dsk file and reopening the Concept project.