Control File: invalid URI field
Some fields, such as the Homepage and Bugs fields, accept a URI as their value. The URI has to be a valid http or https Internet address. Anything else and the packager complaints about it.
VALIDHomepage: https://unigw.sourceforge.net/
Bugs: https://www.m2osw.com/contact
INVALIDHomepage: windowspackager.org
Bugs: SourceForge Bug Tracker