Close Vegas program.
Open registry editor.
Go on the left side to this key:
HKEY_LOCAL_MACHINE / SOFTWARE / Microsoft / Windows NT / CurrentVersion / Fonts
On the right side search: “MS Sans Serif 8,10,12,14,18,24”
Double click > replace original value “SSERIFE.FON” with new value “SSERIFER.FON” > press OK
Start Vegas program.