Solid Explorer: Can't create streaming socket

last week Solid Explorer started misbehaving. finally had to rip it out and reinstall it. but now, it reports that it "Can't create streaming socket" when i try to stream video from my server, which i have been doing literally every day for the last 8 years with this app. nothing has changed in the environment except a couple Google app updates. anyone else having this sudden issue and has anyone found a fix?