Have a error report that won't go away even when *fixed*

So I get an error when testing my game.

Error: <<set>>: bad evaluation: Cannot read property '1' of undefined
And of course I checked and found a misspelled variable, but after correcting the misspelled variable I get the same message and hovering over the message brings up the same variable with the same spelling before I corrected it. Like this:

Before fix:

$CastlePrint to $CasstleSize

After fix:

$CastlePrint to $CastleSize

the error message still displays the first, but that is not what it says in my code:

<<set
$CastleSize to 1
$CastlePrint to $CastleSize

>>

I have tried rewriting the entire statement and copy pasting the correct spelling and closing twine to restart, but that doesn't do anything.