Looks like I own two versions not yet recognized of "Myst Masterpiece Edition" and "Riven: The Sequel to Myst". Both come from the same media, a collector edition I bought on Amazon France in 2005 when Myst V came out in stores.

I wanted to report that in the bug tracker at SourceForge, but I cannot find Myst, Riven nor the Mohawk engine in any groups. So I decided to report the md5 checksums here.
According to SVN build :
Myst Masterpiece Edition French (EMME DVD Collector) : "MYST.DAT", "aea81633b2d2ae498f09072fb87263b6", 73973943
Riven French (EMME DVD Collector) : "a_Data.MHK", "aff2a384aaa9a0e0ec51010f708c5c04", 9865868
Please let me know if I need to report them somewhere else. And many thanks to the guys actually working on the Mohawk engine
