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A quick way to see if that is happening is to make a change to some print out and see it that change is printed. If not, there is an old version somewhere.

If the value of testScore is not being printed at the end of the error message, that means that there is an old version of the program you are executing. If your new code was being executed, it...

Did you try this:
What is the value of testScore when the error message is printed? You should include the invalid value in the message so you know what the code is seeing.

Can you post the console for when you execute the program that shows what you type in and what the program prints out?

What is the value of testScore when the error message is printed? You should...