Sometimes this happens when the system is upgraded or the software itself is unstable. Some people will be at a loss and even think that flashback repair is useful. I have been in this situation before. Later, I found that only flashbacks caused by signatures can be repaired by flashbacks. If the software is not compatible with the system itself, it can only be downloaded again. You can download resources at the same time, all of which are genuine licensed software, with higher compatibility, so don't worry about flashback.