Adding emulators to Emulationstation Ubuntu 18.04

[lexieye]

Greetings all.
I am trying to add pcsx2 to the emulators list but i am having difficulty.
It will not install via binary on RetroPie-setup because of a dependency.
•[Install from binary]
•[Are you sure you want to install from pre-compiled binary?]
•[unable to install binary for pcsx2]

I have install the app manually via the Terminal and it runs well, but when I try to add it to the list I get

it looks like your es_system.cfg file has not been setup or is invalid

I have posted my es_system.cfg as a text file below. If someone could look at it and explain how I'm doing it wrong please.

[https://ctxt.io/2/AAB4SaBXFQ](link url)

The only instructions i found were on a YT video below

and to paste your new code under PSX with quotes
<system>
<system>
So it looks like

</system>
 </system>
  <name>PCSX2</name>
  <fullname>Sony Playstation 2</fullname>
<path>/home/thomas/RetroPie/roms/ps2</path>
  <extension>.cue .bin .cbn .chd .img .iso mdf .ngr .toc .z .znx .CUE .BIN .CBN .CHD .IMG .ISO .M3U .MDF .PBP .TOC .Z .ZNX</extension>
  <command>/usr/games/PCSX2 %ROM%</command>
  <platform>pcsx2</platform>
  <theme>ps2</theme>
<system>
</system>

[sleve_mcdichael]

Well you got your opening/closing tags all messed up. <system> starts a system entry, and </system> (with a slash) finishes it. Of the four tags shown in your example, you need to remove the slash from the second and fourth ones, and add it to the third one:

  <platform>psx</platform>
  <theme>psx</theme>
# this is the END of the previous system entry:
</system>
# and here is the start of your new one:
 <system>
  <name>PCSX2</name>
  <fullname>Sony Playstation 2</fullname>
<path>/home/thomas/RetroPie/roms/ps2</path>
  <extension>.cue .bin .cbn .chd .img .iso mdf .ngr .toc .z .znx .CUE .BIN .CBN .CHD .IMG .ISO .M3U .MDF .PBP .TOC .Z .ZNX</extension>
  <command>/usr/games/PCSX2 %ROM%</command>
  <platform>pcsx2</platform>
  <theme>ps2</theme>
# now close out your custom entry:
</system>
# and resume with the existing ones:
<system>
  <name>retropie</name>
# etc.

[lexieye]

@sleve_mcdichael thank you
I have learnt a good lesson today
I do really appreciate it