From d0a4ae8766a57d4ba445824c339aaccd8dbc93f7 Mon Sep 17 00:00:00 2001
From: "G.A. vd. Hoorn" <g.a.vanderhoorn@tudelft.nl>
Date: Mon, 31 May 2021 11:33:15 +0200
Subject: [PATCH] Print two hints when pipe can't be opened

There are more possible causes, but these are the two most often seen.
---
 modROS.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modROS.lua b/modROS.lua
index 6affaa1..c6ed4f2 100644
--- a/modROS.lua
+++ b/modROS.lua
@@ -500,6 +500,9 @@ function ModROS:rosPubMsg(flag)
         else
             -- if not, print error to console and return
             print("Could not open named pipe: unknown reason (FS Lua does not seem to provide it)")
+            print("Possible reasons:")
+            print(" - symbolic link was not created")
+            print(" - the 'all_in_one_publisher.py' script is not running")
             return
         end