@rmg, thanks for the info. Our deployed does not work correctly (long story), and I’m new to webMethods, so it took me a while to go through the logs and file folders and figure this out, but in case anyone has a similar problem, here is what happened:
Some time ago, someone attempted to install a partial release that was built incorrectly (missing files, etc.). This returned an error and actually deleted a bunch of files from the package (leaving just the package folder and the ns folder within it).
When I restarted IS it did not load that package because even though the folder exists, it does not contain the correct files (don’t know which specific files it needs, but I assume it was missing crucial files).
BUT, when I tried to create a package with that name, the folder was still there in webMethods6>IntegrationServer>, so it returned an error…
My solution: delete both folders, restart IS and install a full release from QA. (and delete the partial release that caused the error, in case anyone tries to use it).