Edit2: Disregard everything I posted below, have you tried this from the sticky? Sounds a lot like the problem you're having:
Problem 4
Problem: I press start on the updater, the client runs without showing the ZylonShield Splash Screen.
Solution: You need to install this and this
First link is dead, but I googled it and I'm pretty sure it's this:
1st:
https://www.microsoft.com/en-us/download/details.aspx?id=222nd:
https://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=29---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
~Edit: Sorry spelled "anti" wrong.
[/quote]
This guy might be on to something, try installing it in a new directory aswell. And I assume you have tried restarting your PC aswell?
I've seen this before, it's just I don't know how to fix.. and Normally running it in compatibility mode fixes that, but I don't think you can that on Windows XP.
Edit: OH, you did download the "Required Software" from
http://boutcheetah.zylongaming.com/index.php?action=downloads right?
I don't know anything about Windows XP is what I meant to say*
Let's make a list:
1) Restart PC
2) Make sure Required Software is downloaded / installed
3) Disabling Anti Virus
4) Different directory
Add more to this yourself, from stuff that you have tried so we can figure out.