Exception window appears when trying to open a file

Image Analysis
#1

Hello,

I am new to FIJI and have just downloaded it. I am trying to open a file, but I always recieve the following exception window:

java.lang.NoClassDefFoundError: ij/plugin/PlugIn
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at ij.io.Opener.<clinit>(Opener.java:49)
	at ij.plugin.Commands.run(Commands.java:27)
	at ij.IJ.runPlugIn(IJ.java:199)
	at ij.Executer.runCommand(Executer.java:137)
	at ij.Executer.run(Executer.java:66)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: ij.plugin.PlugIn
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

Can someone help me fix this issue? Thanks.

#2

It would probably help to include the file, or at least the file type, operating system, and any other information you have available.

Have you tried opening other file types?

#3

I am using Mac OS and the file type is nrrd. As soon as I hit File > open the error message comes up so I can not open any file.

#4

It sounds like something is very broken with your installation. Where did you download it from?