What assistant do you use?
When UO recently added/patched new legacy they originally broke CUO, emulation, and assistants like UOSteam. This is because UO changed the file format for the cliloc files, and you can no longer just open them. They are encoded. CUO and TrueUO patched the issue, but the assistants, like UOSteam, are closed source. Do you also notice issues when casting spells regarding the "words of power"?