It seems, that you zipping paths included, not as well, as other modder zipping.
In my linux, I can not extract with common file manager tool:


I need to extract it every time from command line:
$ unzip AutoForestryDesignations-0.1.8.zip
Archive: AutoForestryDesignations-0.1.8.zip
warning: AutoForestryDesignations-0.1.8.zip appears to use backslashes as path separators
inflating: AutoForestryDesignations/0Harmony.dll
inflating: AutoForestryDesignations/AutoForestryDesignations.dll
inflating: AutoForestryDesignations/changelog.txt
inflating: AutoForestryDesignations/config.json
inflating: AutoForestryDesignations/LICENSE
inflating: AutoForestryDesignations/manifest.json
inflating: AutoForestryDesignations/readme.md
inflating: AutoForestryDesignations/Thumbnail.png
inflating: AutoForestryDesignations/translations/de.json
inflating: AutoForestryDesignations/translations/en.json
inflating: AutoForestryDesignations/translations/es.json
inflating: AutoForestryDesignations/translations/it.json
inflating: AutoForestryDesignations/translations/pt.json
inflating: AutoForestryDesignations/translations/ru.json
inflating: AutoForestryDesignations/translations/sv.json
inflating: AutoForestryDesignations/translations/zh.json

---> warning: AutoForestryDesignations-0.1.8.zip appears to use backslashes as path separators