>I tried increasing the # of back client licenses but it doesn't
>seem to want to take it...

Be aware that this can happen due to an historic server defect
in failing to properly handle failing to update the "nodelock"
license file because the server directory's file system is full:
it blithely takes the Register command and comes back as though
there is nothing wrong, though the server obviously got a write
error from the operating system.
   Richard Sims, BU