I have a few students with fresh installs of Processing 4b7, 4b6, and even 3.5.4 that are getting the following error when trying to run a new blank sketch:
java.lang.RuntimeException: java.lang.ClassNotFoundException: sketch_220404a at processing.core.PApplet.runSketch(PApplet.java:10397) at processing.core.PApplet.main(PApplet.java:10187) Caused by: java.lang.ClassNotFoundException: sketch_220404a at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520) at processing.core.PApplet.runSketch(PApplet.java:10390) ... 1 more RuntimeException: java.lang.ClassNotFoundException: sketch_220404a
I thought maybe they were trying to run from inside a .zip file, but no. One of them is on Windows 11, the other on Windows 10.
I can’t quite figure this out. Are they missing a separate Java install somewhere? Is it a permissions thing? Any leads would be appreciated.