Hi, I get this error when I try to save a content with same title:
Undefined offset: 1 in <...>/fuel/packages/orm/classes/observer/slug.php on line 63
I would change the line 63 from:
$index = (int) $matches[1];
to
$index = isset($matches[1]) ? (int) $matches[1] : 0;
This is because when you find the original slug (without the postfix '-<number') $matches contains only the globalm match.
I hope this can help.
Have a nice day.