FAQ: How do I report a bug?

Before sending a bug report:

Make sure that this has not already been fixed: upgrade to the latest version of ImageJ (by updating the ij.jar file, see this FAQ: How do I update ImageJ?)
If possible, try to reproduce the bug on more than one machine.

If the problem persists, then send a bug report to wsr at nih.gov including the following information:

OS version
ImageJ version (shown in Help/About ImageJ)
Java version (shown in Help/About ImageJ)
Memory assigned to ImageJ (shown in Help/About ImageJ)
Any error messages
Steps needed to reproduce the problem (e.g. a macro that exemplifies the problem)