When you upgrade to Prolint 71 from an older Prolint release and you were already using the Roundtable integration, then you will experience errors until you make the following fix:
Locate in your Roundtable directory the compiled file "rtb_evnt.r" and delete it.
Locate in your Roundtable directory the sourcefile "rtb_evnt.p" and open it in your editor.
Find the line where prolint/rtb/custom_evnt.i is included:
{prolint/rtb/custom_evnt.i}
and change it to
{prolint/roundtable/91c/custom_evnt.i}
Optionally compile+save rtb_evnt.p.
That's all, you are ready now.
You may have noticed that directory "prolint/rtb" has been deleted and replaced by a new directory "prolint/roundtable" with subdirectories for several Roundtable versions.
"91c" should probably work for Roundtable versions 9.1a to 9.1c.
"101b" is made for Roundtable 10.1b and may work for other Roundtable versions too.