Don't forget the christmas patch
I've tested the trainer with the latest version of Terraria and it WORKS FINE. I trust you if you say that it doesn't work on your end, but there is nothing I can do or there is nothing I should update when it works for me and for some others as well.
You'll find some ideas in this thread on how to solve the issue or about what have solved the issue for others.
And a short note to the guy (I don't know and I don't want to know) who thumbs down each post which is giving me the feedback that the trainer works:
I APPRECIATE feedback whether a trainer works or not. If you thumb those posts down because you're frustrated that it isn't working for you, those people MIGHT stop giving me their feedback. You might not care but I ****ing do!
The first trainer was RETIRED from Caliber due to massive amount of patches and changes the developers made to this game. This isn't part of my contract nor anyone has forced me to write a trainer for this PRETTY OLD game. I was asked nicely and decided to continue supporting this game because I want to do you guys a favor. If this isn't the case then just let me know and I'll ask PWizard to bring back the retired status.
Have a nice weekend,