Hmmm.... I followed my own instructions with a fresh Multimc install and downloading the zip I gave out and everything worked out fine for me. Perhaps a fresh Multimc install could work? Unless you've also tried that out.
Well that's very odd... Well I don't really have many other ideas... I would suggest installing it the old fashioned way but of course you'll experience crashes if you use the old sounds feature...
Edit:
One last possibility which may or may not be it, who knows, but what version of Java are you running?
Something I noticed is that when playing on a alpha generator world and using old mob spawning, monsters don't spawn. When turned off, no animals spawn (I didn't test it with beta worlds). Why is that?
I just tested it out using the Alpha generator and the Alpha 1.1.2_01 preset and it seemed to work fine for me. Both animals and monsters spawned fine for me, perhaps just changing the setting a little through back to the Alpha 1.2.0 setting would fix it? Although with this I did discover that squid still spawned despite using the Alpha 1.2.0 mob spawning setting so I'll have to figure that one out.
Something I thought about was having the ssp mod for newer minecraft versions because server lag is something I really hate about the newer versions starting at 1.3 and I know lots of other people are annoyed by it too (especially because creepers explode way faster because of it), is that possible without lots of work? I don't really know anything about modding lol.. I (and I think a lot of other people) would love to have it when playing newer vanilla (or modded) versions of minecraft.
It would be neat to port SSP to newer versions, but it would most likely need an entire rewrite since a ton has changed since 2013. Even then I would need to learn more about Java before I'd take it on unless someone else decided to do it. And also it would most likely be incompatible with Forge as Exalm originally stated due to how Forge works with the game. And it probably wouldn't work as a mod like you'd install a modern mod since, I think at least, Forge acts as a between layer for Minecraft and mods, allowing access to parts of Minecraft but not all of it. Now maybe it would be possible to create a specialty version of Forge which would bring back SSP, but I really have no clue and it would most likely be a very niche thing.
So for now it'll remain a 1.6.4 only mod, but I do hope to one day try porting/remaking the OldDays mod for newer versions, but I once again still need to learn more about Java.
Sorry, but it's not possible since the Joypad mod requires Forge and OldDays doesn't not and will never support Forge, at least the 1.6.4 version won't. If a port ever does comes for new versions of Minecraft, theoretically it should since it probably would be using Forge.
Yeah, however the 1.5.2 (nor 1.6.2, but Olddays doesn't support 1.6.2) version does not require forge, but it changes minecraft.class, so they aren't compatible.
Yeah so I'm not gonna go and decompile their mod to figure out how it works and attempt to add support to and older version of OldDays. I do apologize for that though, it would just take a lot more effort than I'd like to try and do it. Unless that's what you were saying there pretty much, in which case I'm glad you understand.
No problem, I understand, I thought it might have been simplier. So, if there ever is a future version of olldays, it would be forge compatible? And for what version in particular? Would we be able to disable changes of newer versions?
Hmmm.... I followed my own instructions with a fresh Multimc install and downloading the zip I gave out and everything worked out fine for me. Perhaps a fresh Multimc install could work? Unless you've also tried that out.
Just tried it and didn't work, same problem.
Well that's very odd... Well I don't really have many other ideas... I would suggest installing it the old fashioned way but of course you'll experience crashes if you use the old sounds feature...
Edit:
One last possibility which may or may not be it, who knows, but what version of Java are you running?
I'm using Java 10.0.2 (64-bit), I downloaded it just a couple weeks ago.
Alright, I'm pretty sure that's the problem since I'm using the latest Java 8 version and experiencing no crashes at all.
I installed Java 8 and now it works! Great, thanks!
There ya go! I'm glad the problem's solved!
Something I noticed is that when playing on a alpha generator world and using old mob spawning, monsters don't spawn. When turned off, no animals spawn (I didn't test it with beta worlds). Why is that?
I just tested it out using the Alpha generator and the Alpha 1.1.2_01 preset and it seemed to work fine for me. Both animals and monsters spawned fine for me, perhaps just changing the setting a little through back to the Alpha 1.2.0 setting would fix it? Although with this I did discover that squid still spawned despite using the Alpha 1.2.0 mob spawning setting so I'll have to figure that one out.
It seems to work normally on beta worlds.
Something I thought about was having the ssp mod for newer minecraft versions because server lag is something I really hate about the newer versions starting at 1.3 and I know lots of other people are annoyed by it too (especially because creepers explode way faster because of it), is that possible without lots of work? I don't really know anything about modding lol.. I (and I think a lot of other people) would love to have it when playing newer vanilla (or modded) versions of minecraft.
It would be neat to port SSP to newer versions, but it would most likely need an entire rewrite since a ton has changed since 2013. Even then I would need to learn more about Java before I'd take it on unless someone else decided to do it. And also it would most likely be incompatible with Forge as Exalm originally stated due to how Forge works with the game. And it probably wouldn't work as a mod like you'd install a modern mod since, I think at least, Forge acts as a between layer for Minecraft and mods, allowing access to parts of Minecraft but not all of it. Now maybe it would be possible to create a specialty version of Forge which would bring back SSP, but I really have no clue and it would most likely be a very niche thing.
So for now it'll remain a 1.6.4 only mod, but I do hope to one day try porting/remaking the OldDays mod for newer versions, but I once again still need to learn more about Java.
All of the download links do not work anymore, this comment was posted on 04/21/19 (April 21st 2019)
Does anyone has mirror downloads for 1.6.4?
I posted a link to a fixed version on the last page.
Thank you! You rock!
Is it possible to make it compatible with the controller mod? I really want to play it on split-screen.
https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/1283271-joypad-mod-usb-controller-split-screen-over-350k
Sorry, but it's not possible since the Joypad mod requires Forge and OldDays doesn't not and will never support Forge, at least the 1.6.4 version won't. If a port ever does comes for new versions of Minecraft, theoretically it should since it probably would be using Forge.
Yeah, however the 1.5.2 (nor 1.6.2, but Olddays doesn't support 1.6.2) version does not require forge, but it changes minecraft.class, so they aren't compatible.
Yeah so I'm not gonna go and decompile their mod to figure out how it works and attempt to add support to and older version of OldDays. I do apologize for that though, it would just take a lot more effort than I'd like to try and do it. Unless that's what you were saying there pretty much, in which case I'm glad you understand.
No problem, I understand, I thought it might have been simplier. So, if there ever is a future version of olldays, it would be forge compatible? And for what version in particular? Would we be able to disable changes of newer versions?