Where is this menuitem? Rated 4 out of 5 stars
Mozilla/5.0 (X11; Linux x86_64; rv:27.0) Gecko/20100101 Firefox/27.0 SeaMonkey/2.24a1 ID:20130919003001 c-c:1ea1fc3586db m-c:803189f35921
Zippy Extension Packager 17
The "Create XPI" menuitem is not to be found in the context menu for extensions in the "Recent Updates" tab of the Add-ons Manager. In the "Extensions" tab it is present, at the very bottom under a separator.