http://imagej.273.s1.nabble.com/ImageJ-2-0-0-rc-13-released-tp5009146p5009156.html
>
> Hi Aryeh,
>
> It looks like you have some version skew with your imagej-legacy jar.
>
> Can you tell me what version of imagej-legacy is in your
> Fiji.app/jars? Do you remember if anything was flagged locally
> modified when you updated?
>
> Are you able to run Help > Update Fiji? If so, can you go to advanced
> mode and find the imagej-legacy entry? You should be able to update it
> through this interface. The expected version is 0.8.0.
>
> Let me know what you find!
>
> - Mark
>
> On Aug 12, 2014 2:32 PM, "Aryeh Weiss" <
[hidden email]
> <mailto:
[hidden email]>> wrote:
>
> On 8/12/14, 8:59 PM, Mark Hiner wrote:
>
> Hi all,
>
> Today, the ImageJ team is happy to announce a new public
> release candidate
> for ImageJ2:
> version 2.0.0-rc-13.
>
> This release removes the anonymous plugin usage statistics feature
> introduced in 2.0.0-rc-11.
>
> ImageJ 2.0.0-rc-13 is available immediately via the Fiji
> update site.
>
>
> Following this update my FIji is completely broken. Anything
> (including quiting) results in this error:
>
> (Fiji Is Just) ImageJ 2.0.0-rc-13/1.49f4; Java 1.6.0_65 [64-bit];
> Mac OS X 10.9.4; 32MB of 6707MB (<1%)
>
> java.lang.NoClassDefFoundError: org/scijava/usage/UsageService
> at
> net.imagej.legacy.DefaultLegacyHooks.usageService(DefaultLegacyHooks.java:603)
> at
> net.imagej.legacy.DefaultLegacyHooks.interceptRunPlugIn(DefaultLegacyHooks.java:167)
> at ij.IJ.runPlugIn(IJ.java)
> at ij.Executer.runCommand(Executer.java:131)
> at ij.Executer.run(Executer.java:64)
> at java.lang.Thread.run(Thread.java:695)
> Caused by: java.lang.ClassNotFoundException:
> org.scijava.usage.UsageService
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 6 more
>
> I could not use the bug reporter . I can pull my latest backup,
> but perhaps someone can tell me if there is a way (perhaps with
> the command line, to get around this.
> Thanks in advance.
>
> --aryeh
>
> --
> Aryeh Weiss
> Faculty of Engineering
> Bar Ilan University
> Ramat Gan 52900 Israel
>
> Ph: 972-3-5317638
> FAX: 972-3-7384051
>