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2.2.0

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@github-actions github-actions released this 24 Sep 12:58
· 35 commits to main since this release
v2.2.0
59db399

ObserverLauncher 2.2.0 —

This is the user-facing summary for the GitHub Release. No jargon. The developer changelog is
in CHANGELOG.md; the two are kept in sync.

The big one: create a server without it landing in the wrong place

If you had more than one server, creating a new one could quietly target a different server's
folder — the wizard would complain the folder "already has a server jar" (showing another server's
jar) even though the new folder was empty. That's fixed. Each server now stays in its own folder.

Also: a server creation that failed used to leave an empty leftover instance behind. Now it doesn't
(a cancel still keeps your work so you can resume).

Downloads that actually work

  • Paper and Folia used to fail with "no stable build" right after a new Minecraft version came
    out, because the launcher was picking an early test build. It now picks the newest stable build
    automatically and tells you which one it chose.
  • NeoForge used to install a test version for the wrong Minecraft version. Now you pick your
    Minecraft version first, then see that version's builds (newest stable first, test builds clearly
    marked).
  • Forge/NeoForge installer now catches a corrupt download before running it, and if the install
    fails it shows the real reason instead of a blank error.

A friendlier setup wizard

  • Server software is now a card picker: pick Paper, Purpur, Fabric, Forge, NeoForge, Vanilla and
    more, each with a short description and what it needs. Vanilla is marked Recommended for
    beginners.
  • You can step back to change the Minecraft version (before, NeoForge was a dead end).
  • The review screen shows where the download comes from, which Java it needs, and warns you if your
    Java is too old.
  • Downloads show speed and time remaining, with a Cancel button.
  • Errors are now plain: network, checksum, missing Git/JDK, folder not empty, out of disk space,
    or "no stable build" (which jumps you back to pick a version).

Java: the right version, automatically

  • The launcher now installs the Java the server actually needs. Old servers (Minecraft 1.16.5 and
    older) need Java 8 — before, they got Java 21 and wouldn't start.
  • Servers launched by run.bat (NeoForge/Forge with no .jar) now get the right Java too: the
    launcher reads the server's files to figure out which Minecraft version it is, so an old 1.16.5
    Forge server gets Java 8, not Java 21.
  • Overview shows "needs Java 21, have 25" and gives you a one-click Install button when your
    Java is missing, too old, or too new (so you can drop Java 25 to 21 if a mod needs it).
  • If you have several Java versions installed, a new Installed runtimes dropdown lets you switch
    between them per server.

Smaller fixes

  • Renaming an instance no longer crashes (the old browser prompt isn't supported in the app — it now
    uses an in-app dialog).
  • The console no longer spams "Unknown or incomplete command" from forge tps on servers that
    reject it.

What to watch out for

  • Java is usually backward-compatible, so Java 25 often runs a 1.21.1 server fine. You only need to
    switch to the exact version if a mod or plugin (mixin/ASM) breaks on the newer Java.
  • Existing empty leftover instances from earlier versions are not cleaned up automatically — remove
    them with the X button in the sidebar.
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