If when running School Days you are getting the error message "script version doesn't match" then there is most likely an issue with your game's registry data.

Step 1

In the Start Menu, either in the Run Box or the Search box, type regedit and press Enter.

Step 2

Navigate your computer's registry and find:


Step 3

Check the values in the "Install" entry. They should look like this:







If your values are different, or don't exist, please update/add them. To add a new key value, select New from the Edit menu, or by right-clicking your mouse. More information can be found here.