Fatal error: Call to undefined function imagecreatefromstrin

by MidSpeck, Monday, March 18, 2013, 19:18 (4388 days ago) @ argonz

Anyway, I've been able to upload my opml and when I try to update I get the error:
"Fatal error: Call to undefined function imagecreatefromstring()"

You'll need the GD library for PHP. On my machine (Debian-based) it's called php5-gd.
Then restart the web server.