Beckhoff TwinCat NG driver -> Red square

Beckhoff TwinCat NG driver -> Red square

I am having the set of machinery running at the downfloor. I would like to create a summary diagnostic screen which will give a brief owerview of the statuses of all machines.
Each machine runs at Beckhoff1020 CX and having dedicated IP adress.
Below is the content of Beckhoff TwinCat NG driver.ini
C# Code:
[LAUFZEITSYSTEME]
LZS1=801\127.0.0.1.1.1
LZS2=801\10.67.95.50.1.1
LZS3=801\10.67.95.57.1.1
LZS4=801\10.67.95.64.1.1
LZS5=801\10.67.95.71.1.1
LZS6=801\10.67.95.78.1.1
LZS7=801\10.67.95.85.1.1
LZS8=801\10.67.95.92.1.1
LZS9=801\10.67.95.99.1.1
LZS10=801\10.67.95.106.1.1
LZS11=801\10.67.95.113.1.1
LZS12=801\10.67.95.120.1.1
LZS13=801\10.67.95.127.1.1
[IMPORT]
OTHER_TARGET_STATION=1
TPY_PATH=C:\a1.tpy
TARGET_STATION_NAME=1: NetID[10.67.95.50.1.1], Port[801]
All stations are having the same variable.
The issue I am getting is the red squares for almost all stations except 2 stations.
What I am doing wrong?

This is a migrated post! Originally posted on 27.02.2013 by user sdolnyy. Please be aware that information can be outdated.