Thank you for bringing this to my attention.
It was supposed to be an invitation with no expiry date, instead it expired....
I changed it elsewhere as well.
I don't know. Have you tried starting the game as administrator? Maybe there's something on your computer that doesn't allow access to your disc...
If it was a common problem it would occur to many other players, but this is the first time such a specific situation has happened.
The alternative is that the saves you have are corrupted.
I'm sorry, but RPGMaker has many limitations and my programming skills are not that good.
1. Thank you for the compliments!
2. Unlike the first one, the level cap will no longer be Lv20 but rather Lv99, so characters learn skills more slowly. There will not be as many skills for characters because there will be 11 playable characters to interchange, so there is much more choice.
3. For Prixy.NIN you are right, maybe I will change it to Core Alpha.
I always recommend using the itch.io app.
It's pretty useful and works very well, running games without unpacking them (the problem is that itch.io doesn't allow you to upload multiple files, so you're forced and compact them).
It solves many problems with saves and compatibility, but beware: it doesn't keep your saves when you upgrade to another version so remember to make a backup before upgrading the game.