To reproduce the issue, simply export ‘HowTo Send or Receive a Spout Texture’. If you do not export it, it is visible in both Spout Receiver and Resolume. Otherwise, it is not visible in either. Sometimes even the first frame fails to load.
In short, something is clearly not working properly after export.
just tested this and cannot reproduce any issues. beware though that the exported apps spout interferes with the one of a running instance of vvvv… could that have been the issue you ran into?