I synced to a second shell, but now I am unable to sync back.

I tried to over to the broken shell, it is still there and the storage shows as active.
However, when I go into a new shell store it is not visible in the wheel.

Images:

Shell storage that is not working:
https://i.imgur.com/YQnc7kt.jpg

Shell wheel that does not display it:
https://i.imgur.com/XtJJsII.jpg

I did see this line in the console:
03.03 19:09:22 [Server] Server thread/INFO [STDERR]: [me.ichun.mods.sync.common.tileentity.TileEntityDualVertical:func_145839_a:409]: Read playerUUID:3506994a-bc90-427d-bdda-be06e992aed9 for name Eliminator_v

I will say that the shell came back after a server reboot, but this may be a fixable issue so I will leave the issue open until someone closes it.