Thread:Project:Support desk/"Import failed: No pages to import"

I'm trying to import Template:Chart and all related templates from my online 1.21 MediaWiki install to my local 1.15 install. I finally got admin privileges for my main account (see my previous post), but now, when I try to import the .xml download file from the now-available Import Pages page, I get an "Import failed: No pages to import" error. Is this a version incompatibility problem? If so, how do I overcome it? Is there a place where I can download a version of Template:Chart and related templates that's compatible with 1.15? Thanks!