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Fix non-functional ImageJ after Update


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This section is out of date, potentially misleading or invalid. Be careful with any instructions here. When in doubt, ask for help from the community.


Unfortunately, there was a bug in the ImageJ updater that affected the update of the updater itself. The easiest way to get back a functional updater is to import this URL via File  › Import  › URL....

If that does not work, please delete the files ij-ui-swing-updater-2.0.0-SNAPSHOT.jar, ij-updater-core-2.0.0-SNAPSHOT.jar and ij-core-2.0.0-SNAPSHOT.jar from the Fiji.app/jars/ directory (MacOSX users, ^ Ctrl+click on the Fiji icon and select Open Package Contents and open the jars/ directory you see there). After that, the Updater should magically repair itself.

If that still fails, please download a fresh copy from here:

Error creating thumbnail: Unable to save thumbnail to destination
~ Download Fiji for your OS ~
Error creating thumbnail: Unable to save thumbnail to destination
Windows (64-bit)
64-bit 		macOS
macOS 		Linux (64-bit)
64-bit
Other downloads
Windows (32-bit) 32-bit All platforms (no JRE) No JRE Linux (32-bit) 32-bit
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