if we don't have a connkey, comms will not be open so don't touch the sock file or call checkCommandQueue

src/zm_eventstream.cpp

@@ -761,6 +761,7 @@ void EventStream::runStream() {
     unsigned int delta_us = 0;
     send_frame = false;
 
+    if ( connkey ) {
       // commands may set send_frame to true
       while ( checkCommandQueue() && !zm_terminate ) {
         // The idea is to loop here processing all commands before proceeding.
@@ -771,6 +772,7 @@ void EventStream::runStream() {
         touch(sock_path_lock);
         last_comm_update = now;
       }
+    }
 
     if ( step != 0 )
       curr_frame_id += step;