Sorry that it took me a while to respond to you again! I was looking through some other errors & work. I wrote up some potential issues / fixes that I was going to send you, but since you've fixed the problem it seems a bit moot now.

I'm glad that you were able to fix the issue on your own though!

I'll leave a shorter version of my suggestions below. Although you don't need them anymore, you might still find them helpful. Or maybe someone else will a similar issue come across them:

What I was originally going to say:

I took a closer look at the images you posted. Here's my current thoughts on potential issues:

• Unity 2018.4.36f1 is very outdated. You'll need to either update Unity or adjust your MasterBundle.dat file.
• Make sure you've tagged your main folder with an asset label.
• Double-check that your MasterBundle.dat is correct.

You can use older Unity versions, but it's better to use the same...

For masterbundles, it's important that you tag your folders (and only the necessary folders) correctly. Additionally, your file path in Unity should be 1:1 with your file path in-game.

You most likely didn't bundle your mod correctly. Providing more information or images from Unity would likely be helpful.

I'm glad that you were ultimately able to resolve this issue on your own. I hope you and your friend were still able to have a fun time in spite of the problem.

The reason the error is fairly vague is because the game just cannot know where along the line the connection failed – just that it did (because the connection was never established). Note that the server info you see before joining is just from the Steam server list; you don't actually attempt to connect to the server until you actually click the button to join.

With that being said: it'd make sense to update the support article to provide more information regarding host-specific issues (e.g., how in this case it was a port forwarding issue). I'll make a note that the article should be tweaked further.

Thank you for sharing.

Unfortunately, because this is a vague error that typically isn't caused by the game itself, I can't provide step-by-step instructions to fix it. It'd be easier to narrow down the actual issue first.

The linked support article gives advice on narrowing down the cause of the issue, which would make it easier to resolve (or if it's caused by something like your AV blocking it, then you would resolve it by creating a exception as mentioned in the support article).

If OP (or someone else) is unable to resolve the issue with just the relevant articles, they can file a support ticket from the website as well.

Good luck with your map development project!

Players cannot build in the main city of Elver. Try building somewhere else.

Try making sure your graphics drivers are up-to-date.

This is the correct answer. Curated maps are, in many ways, functionally just community-created mods similar to any other content you can download from the Steam Workshop.

Did you download an old version of Rocket off some website? Our official fork of Rocket is packaged with the server files. All you have to do is run the installer we provide.

Have you read the support article about this error message? https://support.smartlydressedgames.com/hc/en-us/articles/12174787513236--Lost-connection-to-host-or-Steam-network-

It's from a mod you have installed. The mod author might have listed such information from the mod page. Otherwise, just check from the mod folder.

^^ This.

Also, to clarify: -USEALLAVAILABLECORES isn't a valid command-line / launch option. That's one of Unreal Engine 4's built-in command-line arguments. Unturned is made in Unity, not Unreal Engine 4.

Players looking to configure their launch options should refer to the official documentation that we link to from in-game, or use our ...

The official Discord server is discord.gg/unturned.

There's also a ton of community servers. This subreddit has one, many of the larger server networks and content creators have one, there's a lot of servers dedicated to modding/plugins, and more! You can probably find a handful of these through Discord's "Discovery" feature.

Terrain → Materials → Cut [R]

Most curated maps have custom progression and custom items instead of the normal items/progression you'd experience on official maps.

There isn't a single item on A6 Polaris from the vanilla game, hence why you can't use any vanilla blueprints.

You're welcome!

I'm personally more active on our official SDG Forum (and so is Nelson), but I do periodically browse the subreddit as well to see what interesting content or questions people are posting here instead.

Be mindful that the player clips are there for a reason (mostly for multiplayer, but regardless). It's unlikely you'll get stuck somewhere you shouldn't be, but if you do you may need to use the /teleport command to get out.

The linked posts discuss this a bit, but to clarify for A6 Polaris specifically:

Use_Legacy_Clip_Borders false toggles the default world border. This is, basically, a cube around the edges of the map, preventing you from going too close to the real edge of the map.

A6 Polaris, and some other curated maps (or Workshop maps) will disable the default world borders by default. This is because they might want to put something in what's normally considered "out-of-bounds". E.g., an NPC safezone, an Easter egg, some questline... Or, their map is a custom/weird shape, and they just need to manually create the map border instead.

Custom map borders (like the ones on A6 Polaris) are done with Player Clip volumes. In the Editor, you can configure volumes from the "Volumes" tab. Navigate to this tab, select the "Player Clip" volume, toggle its visibility to Solid, and then manually go through and delete all player clip volumes on t...

Terrain is always "hollow". The only terrain that actually exists is what you see on the outside.

Use the Hole brush and paint a hole for the entrance. Use Objects (fake terrain, boulders, bunkers, etc.) for inside the hole.