Solved

so at the credits for deleting Monika, it deletes a bunch of stuff, including a certain 'scripts' and when the credits finish a note/poem is displayed but i cant read it as it says 'error - script has been deleted or corrupted, please reinstall the game' in a small text box over the note

so is this a glitch or feature orr?

anyways this is a good game

Ok Everyone!

(haha)

I found out its a feature and i clicked too early so we good

Delete [game directory]\game\firstrun. Easy, no reinstall!