Accessing rm_converter results in "CRRRC7153E Unable to acquire display" error

Accepted answer

According to https://jazz.net/library/article/1089, the following 2 components are required on Linux
-
X11 Server or Xvfb – X11 virtual frame buffer
-
GTK 2+
Make sure the 2 components are installed.
One other answer

Could be something simple as selecting another X display value, as 3 is taken
I run with DISPLAY=:5.0
Also look at this article for troubleshooting: https://jazz.net/library/article/875