The MS office add-in validator from https://github.com/officeDev/office-addin-validator says that my manfiest is just fine (BUT ...)
When I try to side-load it into https://github.com/officeDev/office-addin-validator I get an error message
"The VersionOverrides 1.0 section of the manifest is invalid. A required image size for an icon is missing. Required sizes are 16x16, 32x32, and 80x80."
Unfortunately, there are *many* icon sections in the manifest. The import code knows where the error is, but won't tell me, not even a line number.
So, is there anything better for validating Outlook add-in manifests?