Xaart, hello! Are you using the HD mod? The game crashing issue has been resolved there (well, except for some very specific cases). At least, I haven't experienced it in recent years, except for one or two crashes, but regular saves help to replay and continue.
If you have saves before the crashes, try loading them in the HD mod or send them here. And we'll also take a look at the save before the error in "Seven Seals." Maybe we can overcome these problems.
- I can't imagine why this is happening. What version are you playing? Maybe you have some kind of Heroes mod or modified game resource files (txt)? Send that save too. By the way, "Lord of the Rings 3.0" includes additional files: images and def files with descriptions of artifacts (but some have written that you can play without them).
No, I'm playing without the HD mod. I'll download it, install it, and try it. I'm playing the Platinum version from a virtual disk, and I downloaded most of the maps from Rutracker and the Heroes portal. Unfortunately, I didn't save the save for Seven Seals; I was upset and immediately started another game. I'll start again, and if the glitch occurs in the same place again, I'll post it on the forum. I'll send the Lord of the Rings save as soon as I get home.
Added 2 minutes ago
Regarding Lord of the Rings: there should be the Book of Fire there; check the map version.
Gandalf has the Book of Fire Magic, but it doesn't contain the Berserk spell. I took the map version from here. I mistakenly wrote above that it was the Book of Air Magic - no, it's the Book of Fire, a wizard's hat, and a medal of valor.