I am using aspell and wucuo in Windows. I installed apsell and its dictionary in MSYS2, the package names are msys/aspell 0.60.8-1 and msys/aspell6-en respectively.

It works well with the default settings. However, after I execute the command wucuo-create-aspell-personal-dictionary, I get an error message saying "Can't check region" when I execute the command wucuo-spell-check-visible-region. If I delete the personal dictionary file, it works again.

To reproduce this problem, just install a Windows native Emacs, pull your default setup, and install MSYS2 with those packages I mentioned above and make sure Emacs has access to aspell executable in MSYS2 directory.