ACE Compat is no longer needed nor supported, so that might be your issue.

I add, ACE is not working well. Poor medical system and a mod is missing: @CUP_Weapons_ACE_compat

Everything is wrong in this mission. Glitched sights, enemies shooting too well, enemy spawns in cleared areas... please, fix or delete the mission. I do not recommend playing it.

Check here https://community.bistudio.com/wiki/Crash_Files
The RPT file contains error messages that the game itself sometimes doesn't display.

What's RPT? There's no error message it just doesn't want to load and yeah i have the mods loaded

Check the RPT file for an error message

Can't load the mission :(

Some of ACE' default settings aren't the greatest, and some of the features it adds are more of a nuissance than an improvement for the game (we have, for example, disabled all the hearing stuff). There are a few features, though, like the grenade throwing and most of the medical system, that I really think improve the game.. but, as I said, for multiplayer. Single player, I don't play with ACE.

I agree with you. I had played it for a while. At first I was surprised that the group bar was switched off. Then I saw these and many other settings. Later, I "discovered" the rifle scope adjustment. Unusually enough that the normal display top right was still there, but it was out of order. So I played something around with the current settings. I turned up and back to zero. Shortly thereafter, I discovered a single enemy and wanted to shoot him. But instead, I shot my teammate, who sat behind me in the car! I examined the "incident" and discovered that I could shoot backwards with "zero" (and less)! This amazed and drove me so much that I broke off the mission. :)

I don't do a lot of missions that require ACE. TBH, I don't even remember why this one required it, it's been a while, but I usually only require it if I use an ACE feature that is essential to the mission.

I do agree that I personally wouldn't use ACE in single player either, it's more for multiplayer. I might revisit the mission and see if I can make an ACE-free version.

Sorry but this ACE it's as superfluous as a goiter. It's only a pain instead of a gain.
But ok - it's your mission - therefore no rating.

Fantastic mission!, original!

Keine Ahnung, um ehrlich zu sein. Meiner Meinung nach ist es das beste, sich für Arma 3 einen Clan zu suchen. Missionen wie diese hier sind selten auf öffentlichen Server zu finden.

Genau so ist es, das liegt definitiv nicht an Deiner Mission. Gibt es denn Server auf denen ich Deine Mission spielen könnte? Ich finde leider keine.

Es ist durchaus in Single player spielbar, man muss die KI nur ein bischen selbst managen. Aber das ist leider ein generelles Problem von Arma.

Leider als SP nicht spielbar. Die eigene KI ist einfach zu dumm. Würde zu gern online spielen, nur wo und mit wem?

Argh, yeah I forgot to mention them... I'll update the mod list

Found the problem
CUP_Weapons_ace_compat not found (deleted)
So must be something in one of those MODS

LOL yeah the intro quote of this mission is from "Last Train to Trancentral" :)

Well...anything with the The Justified Ancients of Mu Mu...furthermore known as The JAMs...has gotta be Good! What Time Is Love? Cool

This was done with 3.8.0. You might also want to check your RPT file and see if that says something helpful - it usually does, but the helpful bits are usually buried under a metric shit ton of useless blubber

Just noticed ace update on 25 Oct - this could be the reason. @Alwarren: What version of ace did you have when creating the mission?

Originally i had CUP Terrains Maps & Core loaded but even after disabling them the result is the same it just returns to the Single Mission window. MODS Enabled: CUP Units: CUP Vehicles: CUP Weapons: ace & CBA_A3 (not listed in yr requirements but the CUP items etc require it).

@Somchai agreed, sadly
@Alias already done that, working on the Voynich manuscript now ^^

@Alwarren Anonymous voting system needs to be updated so you can fizzle out the wasters/haters and maybe get some quality feedback that you can work with, like most things its the 1% that spoils it. Upvoted

@Alwarren
LOL, i think you will have more chances to break DaVinci's code than find a reason behind the downvotes :)

@everyone I really don't mind downvotes, if you really don't like the mission, so be it. I would appreciate though if the downvoters could at least write a short comment as to why they downvote. Thanks :)

Do you have all the addons loaded? Including CUP and ACE /and by extension, CBA) ?

Hmmm, when i click Play on the 'single missions' window, the window just flickers. Game does not load :(

@NinjaDemon05 I agree. ACE has a few unique features. Making a mission merely compatible usually doesn't exploit these. Making it a requirement allows the mission maker to make use of these. An ucomping mission of mine will require the use of the telescopic ladder, for example.

@Alias you need to attend CiA Coop nights more frequentuly ;)

I missed this one but i will have a go ASAP. Thank you!

I have found that ACE Compatibility vs ACE required makes game scenarios much more enjoyable...

Agreed with all of the above/below! Thank you!

great mission as always

Fun mission! Too bad I died at the beginning, haha

Fun simple mission! Cheers!

Fun mission, short, and very action packed. Was great

Great mission, we need 30 more like this one please :)

Excellent mission, nice and quick.

*sigh* Picture is wrong, it's COOP 7, not 12.