Plugins Installing, but not showing up #9473

Apache NetBeans version

Apache NetBeans 30

What happened

I'm trying to install some admittedly old plugins into the current version of NetBeans, and they appear to install just fine. But for some reason, they don't show up in Available Plugins or even Downloaded, even after restarting the program. Instead, they're all still in the "Downloaded" tab, as if they weren't actually installed.

I'm not sure if there's a log file somewhere that shows what happened, but I'd really appreciate any help on this. Whether it be fixing an actual bug, or helping me not be dumb about using it (if I missed something).

I haven't tried installing these plugins on any older versions.

Language / Project Type / NetBeans Component

No response

How to reproduce

Download the plugins I'm trying to install:

• GitHub.com/BackendJava/Plugins-para-Reportes-en-java (specifically, the plugin file org-desktop-layout-RELEASE65.nbm in the Plugin para org.layout/ folder)
• GitHub.com/lqthanh/j2me-archive
• Oracle.com/java/technologies/sdk-downloads.html (the third option down, labeled Oracle Java ME SDK 8.3 Plugins for NetBeans 8.1)

Put all of the plugins into one folder

Attempt to install the plugins. When it gives an error saying that it's missing the file unpack200, select the replacement jpack (I think that's what it was called).

It will say it installed successfully, listing all of the plugins in the popup as Installed.

Restart NetBeans

Now the plugins are back in the Downloaded tab of the Plugins manager, and nowhere else.

Did this work correctly in an earlier version?

No / Don't know

Operating System

Linux Mint 22.3 - Cinnamon 64-bit

JDK

I'm TRYING to be able to use the JavaME SDK 8.3.1

Apache NetBeans packaging

Community provided installer

Anything else

No response

Are you willing to submit a pull request?

No