Re: Lesson Timer Error message when changing role to student in 2.0 lesson ដោយ brian avery នៅ ថ្ងៃសៅរ៍ ទី12 ខែកុម្ភៈ ឆ្នាំ2011, 4:41 AM ចំនួនតប៖ 0 Thanks, I'll look. Sorry for the slow reply: I've been too busy with a new project to visit this site for ages. Brian មធ្យមភាគនៃរង្វាយតម្លៃ: - តំណ បង្ហាញមេ ឆ្លើយតប