The Question is:
What can cause this error? We are running x-windows from WRQ reflections x.
The Answer is :
The set of reasons why an X Windows connection cannot be established
from the X Windows client application on OpenVMS to the X Windows
Server on the remote platform approaches infinity in size. Some of
the more obvious and more common potential causes include a problem
on the X Server, a network connectivity problem, erroneous remote
display information on the SET DISPLAY, and access control specifications
on the X Server that prohibit the incoming connection. One of the more
common approaches used for determining the cause of the failure involves
the use of the Motif ico toy, as this image provides reasonably detailed
$ set display ...
$ run decw$examples:ico
To determine the DECwindows version, you can use the following:
Please apply the mandatory ECO kits for OpenVMS Alpha release in use,
please consider an upgrade to a more current release, and please also
upgrade DECwindows to current and install any associated ECO kit that
might be available.