Can somebody spot the issue in the code?

Hello

I have written the code "fourBarSim.m" which is a fourbar linkage simulation. I have also given the code "Project_2_Checker.m" which is for checking the work. When I compare the visualization to the visualization of the Project_2_Checker and it's numeical calculation, everything seems to be exactly what it should be but the cheker gives 0% and says that it is incorrect. I need the code to pass the checker and I was hoping somebody could spot what is wrong with what I have done. I also need to provide two .p files for the Project_2_Checker but I cannot upload .p files so I changed the extension to .m but if you want to run these two files please change the .m of "Auto_Grader_2_Function.m" and "fourBarSimCorrect.m" to .p. I very much hope somebody can help me out. Thank you!

Edit: Thank you for the comments. I removed:

% INITIALIZATION
% clear all variables 
clc
clear

and the issue remains

[Walter Roberson]

Get rid of the "clear all"

[Rik]

Your attachments seem to have disappeared in the interim.