[QUOTE=mciahel;2501038]In that case, it is better to have a full system backup [/QUOTE]
It’s ALWAYS better to have a full system backup. Preferably several.
If it installs, eac3to should work with it. (Fingers crossed!).
If you google enough you might even find some clever person has a guide for extracting and registering just the dlls that eac3to uses.