"One or more SHX files are missing. What do you want to do ... - Autodesk
To type Vietnamese alongside Tai, the UPD version reserves the Alt Gr key for Vietnamese accents while keeping the base keys for Tai. tai font vn unishx upd
Signifies an "Updated" version of the font, often refined to ensure better compatibility with modern operating systems like Windows 10 or 11 , or to fix "stacked diacritic" issues where accent marks would overlap with the letters above. Why Use Legacy Fonts Today? "One or more SHX files are missing