Enterprise Resource Pool was open for editing with all Resources .

[sanjones]

While I had the Enterprise Resource Pool open for editing, Project Server
disconnected. Now the pool shows as being checked out (by me) but I have
been unable to find a way to check it back in and continue with the edits I
need to make.

 

[Dale Howard [MVP]]

sanjones --

Refer to the following link for information on how to check in resources
stuck in a checked-out state:

http://www.projectserverexperts.com/Shared Documents/checkinprojectsandresources.htm

Hope this helps.