Hi,
The problem is solved; the actual problem was the other lines in system.log, which was
kernel[0]: Sandbox: coresymbolicatio(39999) System Policy: deny(1) file-write-create /System/Library/Caches/com.apple.coresymbolicationd
coresymbolicationd[39999]: /System/Library/Caches/com.apple.coresymbolicationd/data does not exist, resetting cache
coresymbolicationd[39999]: Attempt to create [/System/Library/Caches/com.apple.coresymbolicationd/data] failed. No such file or directory
coresymbolicationd[39999]: Unable to open storage at /System/Library/Caches/com.apple.coresymbolicationd/data
This was a known problem, and I could solve this issue by the solution post there.
I have to left /System/Library/Caches as norestricted, but I don’t mind.
After I solved this issue, the context menu appears, odrive-plugin can be found in SystemPreferences, and no log lines like plug-in sdk "com.apple.FinderSync" not registered are written.
I for your information drop the output of your instruction. This output is BEFORE fixing the above problem, but even AFTER I fixed the problem, I can get the same output.
$ pluginkit -vmA | grep odrive
- com.oxygen.odriveapp(1.0) 9AE43B5A-78C3-4BD2-A8DD-09591B4B78F0 2016-02-03 14:02:13 +0000 /Users/misho/.odrive/bin/4894/odriveapp.app/Contents/PlugIns/FinderSyncExtension.appex
$ pluginkit -r ~/.odrive/bin/4894/odriveapp.app/Contents/PlugIns/*
remove: no plugin at /Users/misho/.odrive/bin/4894/odriveapp.app/Contents/PlugIns/FinderSyncExtension.appex
$ pluginkit -vmA | grep odrive
$ pluginkit -a ~/.odrive/bin/4894/odriveapp.app/Contents/PlugIns/*
$ pluginkit -vmA | grep odrive
- com.oxygen.odriveapp(1.0) 727A5B5E-0C1C-4884-A021-F0F2D661FE5D 2016-02-03 14:04:22 +0000 /Users/misho/.odrive/bin/4894/odriveapp.app/Contents/PlugIns/FinderSyncExtension.appex
Thanks a lot.