How to do a CLEAN install.
Go to where you have installed the game and open the game folder and find the folder 'saves' copy that somewhere else, another hard drive, USB stick, etc. Delete the folder 'Holiday Island' or whatever the name of the main folder you installed the game in.
Now open the 'C' driver in explorer and find the folder 'Users' then find the folder with your name. Within that folder will be one named 'AppData' and in that folder will be one named 'Roaming' and finally in that folder will be one named 'Renpy'. Either delete that folder entirely or open it and find the folder that has the Holiday Island 'saves' inside. Delete all of them. Don't freak out your 'saves' are still safe within the 'saves' folder you first copied somewhere else.
Now go to this page and download the game:
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Follow the install instructions.
Now go to this page and download the six (6) Hotfixes:
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Follow the install instructions again.
You may also go to this page and get 0.1.3.3hotfix file. Download, uncompress and follow the install instructions:
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Now go back to the where you originally saved the 'saves' folder and copy it into the game folder. You should now be good to go.