^^ Manually edit Ultraarc.ini & change extension name to 7z OR go thru it & remove everything from the following. Then you can set it properly.
This was reported long ago,
http://www.fileforums.com/showpost.p...3&postcount=71
Code:
[Distribution]
ArchivePrefixName=Data
ArchiveExtension=bin>Remove
[Freearc]
Method=srep,lzma>Remove
PrecompVer=
PrecompJPG=
[7-Zip]
Method=
Level=
[WinRAR]
Method=
Level=
Better be prepared for an exhausting conversion process.... & LOTS of TIME !!!
173 GB, 615,288 Files, 153 Folders