MAINT-6086: Fixed an issue with management of sessionStates (was removing one...

MAINT-6086: Fixed an issue with management of sessionStates (was removing one before it was added in certain cases.) Also changed the calls to LL_ERRS to LL_WARNS (LL_ERRS is a "HaltCatchFire" command and will crash the viewer and nothing in voice should ever bring down the viewer.