Can we please fix this bogus PBB error

I keep getting this error- can we finally get this fixed:

[Info] Starting build for PBB:a9dab55c8ce344c4b2c11e280463e9fb
[Error] Error while building book: Could not remove existing resource. Please close all other open panels and try again.
[Error] Exception: LDLS4.Panels.PersonalBookBuilderPanel.PersonalBookBuilderException: Could not remove existing resource. Please close all other open panels and try again.
   at LDLS4.Panels.PersonalBookBuilderPanel.PersonalBookConverter.<CreatePersonalBookWork>d__2.MoveNext()
   at Libronix.Utility.Threading.AsyncWorkerTask`1.EnumMoveNext()
   at Libronix.Utility.Threading.AsyncWorkerTask`1.EnumMoveNextWithCatch()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Libronix.Utility.Threading.AsyncWorkItem.Verify()
   at LDLS4.Panels.PersonalBookBuilderPanel.PersonalBookViewModel.<CreatePersonalBookWork>d__137.MoveNext()

THERE ARE NO OTHER PANELS OPEN- having to shut down and reopen every time I want to update a PBB while working on it.