The issue probably has to do with resource (fork?) compression/decompression. This feature was (for no good reason?) removed in 9.1. There's quite a list of software that got affected by this, such as After Dark, and possibly also Power MachTen, although the former got a patch fix for it, and the latter even an official patch fix.

If you can bring this ability back to 9.1, and thus also 9.2, 9.2.1, and 9.2.2, it might fix the problem entirely, and also fix a bunch of other software.

I don't think it has anything to do with the "ROM" file: if you install Mac OS 9.2.2 on an Old World ROM machine (using i.e. OS9Helper), you will most likely encounter the exact same issues.

Also, when you ask for "version 9.1 of the ROM", do you mean a ROM file included with some release of Mac OS 9.1, or a ROM file whose version is "9.1"?

Being an avid Hellcats fan since the 90's (perhaps THE essential 90's Mac game for me personally :-) ) I've been following your thread, hoping you could find a solution. (note to myself: My Pismo runs 9.0.4 so I need to check if it runs on there.)

Have the sources for Hellcats ever been showing up somewhere? Has anyone tried to contact Eric Parker about it? Taking the sources and recompiling the game might be the easier way than getting a 9.1 ROM working on the Mini? (though that would be an interesting project and one I'd love to see!)

The policy started right with this post and my conmiment to change them

http://macos9lives.com/smforum/index.php?topic=3047.0

But little to none links were changed. 

I started posting videos on the "News" for every PowerPC or Mac OS9 thinking it were a safe place for them, and leaving the rest with minimum or none YT links.

Then another post that I cant find right now went more deeply on it (GaryN participated on it IIRC) and it was decided to mute/parse all YT links

I never thought embedded YouTube videos could become such a problem, but upon reading @Mat's post, now that I'm thinking about it, y'know, he's absolutely right! Especially with regards to the privacy bit: even on an Ultra Modern System™, no one should be subjected to the privacy creeps of embedded video content, that too from a company as demonstrably vile and dangerous as Google.

I, too, vouch for using simple URLs only, and for this reason alone, even more so than for "Mac OS 9 compatibility", and let the forum user decide whether to click on it (and thus make the decision to harmfully render it on their own machine) or not. With the URL rather than that shortened link code, we can also use various YouTube proxy services, some of which have the ability to do away with this problem.

I would seriously suggest we do not bring back embedded video for these security and privacy reasons. This isn't some "minor" or cosmetic thing like the "Like" button-- this is actually a SERIOUS, real-world problem. I should have noticed, and pointed out, this earlier. Also, plain URLs are pretty easy and convenient in any case, so we also don't have much of a practical nor functional need for them, to top it off.

It would be great if we could somehow fix the existing URLs into real URLs, though ,so they aren't left broken. I assume usage of such embedded videos are rather rare and exceptional, so maybe it's something mods could locate and change/edit manually, rather than this having to be done by @Knez from the side of the forum's code or database data.

Thanks for answering.

I was curious because recently I was very clumsy formatting a 265GB SSD for the Mini, so that it could run OS9, luckily aBc helped me by email. Sometimes the neuron is lost in the void of the skull.

I think the like button is a good idea, it simplifies and declutters threads. Without a like button you have to comment to show appreciation even if you don't have anything to add to the discussion. I personally don't see much of a difference between a bunch of likes or a bunch of short "thanks" and "I agree" posts, but likes at the bottom of a post are less messy and more concise than a bunch of short comments.

I think the like button might also increase engagement with threads. If someone has nothing to add to the thread but still wants to show some kind of appreciation they're more likely to hit a like button than they are to make a post for just a couple words. A like is better than no engagement at all.