The problem here is that you are including excess data in the text file. If you look at a post like this:

http://www.digitalcybersoft.com/Prox...ly-vt4508.html

You will see the correct format is like this as per the tutorial:

201.245.28.74:8080
194.165.130.93:80
219.240.12.173:80
81.30.218.55:3128
201.147.158.52:8080
61.95.194.34:3128
210.128.158.214:80
63.75.183.194:80
219.144.196.226:80
202.159.112.253:8080
218.25.163.20:80
200.129.168.1:8080
80.58.205.61:80
221.212.177.97:80
213.217.46.130:8080
210.21.75.114:8080
218.11.207.244:80

This is obviously diferent from the incorrect form shown here:

24.232.71.13:80 Anonymous Argentina
142.150.3.247:3124 Anonymous Canada
142.150.3.246:3128 Anonymous Canada
70.29.203.141:8080 Anonymous Canada