I had the same problem but then everything worked out just fine after loading my save where the dev is basically saying "save right now or you're fucked!"
If this is any help, I tried to explain it in this post :
https://f95zone.to/threads/bonds-of-love-v0-4-zelathorn-games.51752/page-5#post-4345024
And you can also find an attached file with the save I used to do the update (
6-5-LT1.save). So you can load this save and then go to your bedroom to do the update and you should be golden (just a few events to replay from 0.3 but that way, it allows you to choose the nice or dominant path with the mom during the massage sessions).
Or you can use the attached save file with the update already done (
11-1-LT1.save) and you should be able to play right away (unless it's mandatory to do the update from your own game but that would be unexpected
).
A more user-friendly save system would be most welcomed but it's still worth the trouble I think ^^ So feel free to use the attached save file if you're still interested in playing the last update.
Edit : if you use a save file, please rename the file and remove the prefix added by F95 during the upload ("872131_" and "872163_" respectively). One save should be in the 5th slot page 6 while the other should be in the first slot page 11 after putting them in your save folder.