Extension talk:DPL Page Name S/N Maker (using SemanticForms)

Help:KEB-Expression error: Unexpected < operator.
Im running mediawiki-1.20.2 and DynamicPageList, ParserFunctions, StringFunctions and Semantic Forms with the latest version of today. The first page is created ok, but the second reports the following error: The next serial number is Help:KEB-Expression error: Unexpected < operator. Any ideas what is wrong? /Regards Claes Lindvall