Hello, I created a schematic + PCB in 6.3.43 and the files have not changed since I last worked with them (according to Dropbox). I upgraded to 6.4.7 today, and for some reason, if I "Open Project", I **do** see the schematic and the PCB in Opened Projects.. but I can't open them! Double-click or right-click/open does nothing. There is no error message.  If I open the PCB and the schematic by **File / Open / EasyEDA** then both files open.. but if I then save them to a new project, I cannot open them from there either -- nothing happens, it's like it ignores the command. "Update PCB" also does nothing. "Import Changes" does something, it starts the Loading screen with the quickly filling progress bar, but it just empties again, and fills again, and repeats forever. (I waited several minutes -- normally this is very quick.) I tried uninstalling 6.4.7 and reinstall 6.3.43, and I now see the exact same problem. I can't open my project! Could anyone take a look and see if you can reproduce it? Here is a backup of the project. [https://www.dropbox.com/s/fqqq4ur451uk3e6/PWM%2064ch%20LED%20Controller%20-%20can't%20open%202020-09-19.zip?dl=0](https://www.dropbox.com/s/fqqq4ur451uk3e6/PWM%2064ch%20LED%20Controller%20-%20can%27t%20open%202020-09-19.zip?dl=0) Thanks in advance for any help.