and replace the files HttpServer_OpenSim.dll and
HttpServer_OpenSim.pdb on Opensim bin folder with this new ones.
On windows you may need to unblock the dll. Right click on it, see
Properties, then mark Unblock if present at bottom. Otherwise windows may
silent fail to load it, assuming it is a unsafe web download.
This applies only to version 0.9.0.1 and possible 0.9.0.0
(this includes OSgrid OpenSimulator 0.9.1.dev.24df1086fa from
05-04-2018 and older releases)
THIS DOES NOT APPLY TO MASTER 0.9.1 or derivatives of it
(or next OSgrid releases)
Thanks Terry Ford for identifying this possible cause, and Dan
Banner for extra testing.