LIbreOffice 5.3.3.2 in Windows 10. Fresh install. Spell check not working. Restarted in Safe Mode, and it worked. Any suggestions welcome.
I’ll answer this myself here to hopefully help others with the same situation. I renamed my profile 4.old. (Profile is in User\Yourname\appdata\roaming\Libreoffice) and uninstalled. Then reinstalled. This seems to have fixed it.
Thanks anyway for whoever took the time to look at my question.