Some projects not working on PI

I tried a few different examples I found to get ignition on a Pi 4, and I can get most of it to work. However I have some projects that have a popup and won’t load.

There is a popup “Unable to pen window XXXXX”
with these details…

SerializationException: Error deserializing element “<c”
caused by NoClassDefFoundError: com/sun/java/swing/plaf/windows/WindowsTableHeaderUI
caused by ClassNotFoundException:

Ignition v7.9.14 (b2020042813)
Java: Raspbian 11.0.8

You have to use either Java 8 or 9 on Ignition 7.9.

1 Like

Is there a specific on that I should try?

Try JDK 8 from AdoptOpenJDK: