Unable to load script

[utkonos]

I am trying to isolate an error happening in all Java scripts. As an example, I am using the Skeleton script here:
https://github.com/astrelsky/vscode-ghidra-skeleton/blob/master/ghidra_scripts/ghidra_scripts/SkeletonScript.java

Here is the error:

> Unable to load script: SkeletonScript.java
>   detail: The class could not be found. It must be the public class of the .java file: SkeletonScript

The code is copied and pasted into that java file named SkeletonScript.java.

[astrelsky]

I am trying to isolate an error happening in all Java scripts. As an example, I am using the Skeleton script here: https://github.com/astrelsky/vscode-ghidra-skeleton/blob/master/ghidra_scripts/ghidra_scripts/SkeletonScript.java

Here is the error:

> Unable to load script: SkeletonScript.java
>   detail: The class could not be found. It must be the public class of the .java file: SkeletonScript

The code is copied and pasted into that java file named SkeletonScript.java.

Fixing this will depend on your operating system. You'll need to go to the user ghidra folder where the application.log and preferences are stored. In that folder will be a folder named osgi. Delete the osgi folder and try again. I run into this problem all the time even with the scripts provided with Ghidra. It has become increasingly frustrating.

[utkonos]

@astrelsky I tried what you suggested, but the error is still there. No java-based scripts can run. Not even a hello world. I have also tried deleting the whole ~/.ghidra directory and still no change: nothing will run.

[utkonos]

I found the answer: Ghidra is not compatible with Java 22. Downgrading to 21.0.3 and the error no longer happens.

[ryanmkurtz]

Looks like we can upgrade some jars to get it working with Java 22. I'll try to get that done for the next release.

[fenugrec]

Hmm downgrading java to 21.0.4 doesn't solve the issue here (ghidra 11.0.3 on linux)

[ryanmkurtz]

@fenugrec what version did you downgrade from?

[fenugrec]

it was 22.0.2

[fenugrec]

my bad, I had not deleted the osgi subfolder. So yes, downgrading to 21.0.4 appears to fix scripts