Welcome!

You're using Java 10. Uninstall it and get Java 8.

With TextEdit do this:

Did you put the .sh file in the same folder as the runemate.jar file?

Are you sure Did you try installing JDK Java SE - Downloads | Oracle Technology Network | Oracle What comes up in the terminal if you write java -version

Did you install Java java.com: Java + You

What part don't you understand? It's literally made for noobs.

Open the runemate.sh file with a text editor (plain text mode). Replace the line that says: osrs_path="/Applications/Old School RuneScape.app/Contents/Java/jagexappletviewer.jar" With: osrs_path="~/Applications/Old School RuneScape.app/Contents/Java/jagexappletviewer.jar" Good luck fam

Nah, I read every reply this thread gets. People are simply retarded. I can't help them with that. You're included.

[FIX] macOS AgentInitializationException

Did you guys try using the solutions that have been posted numerous times?

When saving the file with TextEdit, do this: Might as well read the replies dude.

Wouldn't using any JavaFX tutorial suffice?

Tutorial - [FIX] macOS AgentInitializationException

Tutorial - [FIX] macOS AgentInitializationException

Click "format" on the menu at the top and click "convert to text without format" or "convert to plain text" (I don't know exactly how it shows up in English)

Update your Java version.

nice

Glad it did.

Simpler and more reliable fix: Tutorial - macOS - Fix AgentLoadException/AgentInitializationException