Thank you for your great job !
I think I've found a bug : the folder name of a hosted plugin can't contain any "-" (minus) character. I was searching for a long time why the detail plugin page was always 404 before figuring out that it was the folder name !!!
The original name which doesn't run was "abs-xav-functions", and with "abs_xav_functions" or "absxavfunctions" it's OK.
Is it really a bug and could you correct it ?
I've a lot of little hand-made plugins whose folder names contains "-", and with code refering to this folder name...
PS: I've the versions "self hosted plugin" 1.0.9 and "Top Quark" 2.1.0, WP 3.3.1 hosted by Infomaniak.