Reducing number of civilian ships using editor

[Rockettman]

Hi all, I am trying to boost the performance of X3:R on my computer by removing all of the useless civilian ships in the galaxy.

I read a few posts which said to open the Jobs.pck file using Doubleshadow's editor and delete the lines;
6101 Taxi service
6102 Civilian ship
6103 Taxi service
6104 Civilian ship

I have deleted these lines and saved the Jobs.pck file, however this causes all of the ships in the galaxy to have nothing where their name should be.

http://s24.postimg.org/snhzrb6lh/2013_11_26_00001.jpg
Screenshot of the problem

It seems as if all of the NPC ships have been removed from the jobs file. I also tried reducing the numbers of civilian ships, but this had the same effect. I would really appreciate some help on how to fix this if anyone knows how.

[Rockettman]

I am really sorry but I have posted this in the wrong forum , this topic is about X3 reunion version 2.5