I haven't used B4J in awhile so I did an Uninstall of the previous installation and a fresh download of Ver 8.10. Upon startup I receive the "Missing jar file" message as in the attached JPG. Seems like a bug, but I've seen a discussion of this before (without real resolution) so I'm reporting it again. Am I missing an installation step?
Thanks Erel; you are so right. I had looked for build.xml already and hadn't found it. Turns out I had looked only in the B4J installation Libraries folder, not in the Additional Libraries linked folder within B4J. Since I had used B4J before, Additional Libraries had an entry from a previous project, and that folder did contain build.xml.