[lebanon]

for all those installs who are having "no details found" but are certain that details are correct and curl is installed
is due to a simple reason, i said CURL +SSL not just curl , so curl alone is not a guarantee you can open SSL pages with curl, you need curl with SSL , most hosts who install curl allow it with OpenSSL which makes the script work.
As to the differences between this and invision one, i havent seen it but i took a look at its description, obviously he added more controls on the groups and has a nice option to not allow duplicates invites to same email (which could be in both 2 users contact lists )
I have not added such checks so far, further more this script is free and does not promise the updates or support he promises, so the rest is up to the user to choose
as for requirements, both scripts will require the same, no work around this one.