Sadly all my saves are broken too.
There is no "skip". Have "rollback"and "ignore" - "rollback" leads to crash and "ignore" takes me to the beginning where i have to name the character and specify who is who.
Can someone give saves?
You can start a new game, and with CTRL key (the skip key), you will pass over all viewed slides. You can stop where you want. If the game 'thinks' you haven't viewed some pages it will stop by itself at that page. If you're not satisfied with how the pages are skipped, you can go in settings and set skip 'unseen text'. I just checked, with CTRL pushed, the game has a playout of 3 minutes.
With the broken saves, you can overwrite, or more drastic, you can delete save folder from within game folder, and also from your user profile/appdata/renpy/nameofthegame...
In this case you will be able to skip in the game only with the setting above set.
This is valid for all games with renpy engine.