I am the first time to use STM32, so I want to see the previous projects in order to understand the application of STM32. However, the circleOS in CD is version 1.0, so I downlode 1.7 from the internet. I change circleOS1.7 instead of circleOS1.1, but when I ran the project, it always said could not find the file of Fat.elf and Circle.elf? The project ran in version 1.1 also report error. What's wrong with it? Can you help me, thank you!