Josue,
If that doesn't work, go to the cache folder where UPDOX is at for your user account. For example mine is:
C:\Users\martinholt.NOCRHF\.updox\cache
Delete all the files in the cache folder. I also delete all the files in the "Pages" folder: C:\Users\martinholt.NOCRHF\.updox\pages
Then exit and restart UPDOX. That usually works for me
