Hi, first and foremost thanks for all the great extensions. I've found an issue with Extension:Maps and this extension. After much searching (since I had sublist as part of an infobox) I've found that if sublist is used before a map I get a fatal exception. If sublist is used after a map everything works fine. Strangely if I use a map first, then sublist, and then followed by a map everything works fine.
I'm using SubPageList (Version 0.5),Maps (Version 2.0.1), Validator (Version 0.5.1), MediaWiki 1.20.2, PHP 5.4.10 (apache2handler) & MySQL 5.5.28-log.(I also posted this question on the Maps Discussion tab)