Masonry & Infinite-Scroll on tumblr!

Can't figure out what I'm doing wrong here! I've been working on this for two (2) weeks, and I know the answer is right in front of my face just can't see it! The masonry works, but it won't infinite-scroll! Here's my code:

<!DOCTYPE html>

La Femme Nikita | Piranha 3DD ```

``` {block:Posts}

{block:Text}

{block:Title}

{Title}

{/block:Title} {Body} {block:IndexPage} {/block:IndexPage}

{/block:Text} {block:Quote}

“{Quote}”

{block:Source}

{Source}

{/block:Source} {block:IndexPage} {/block:IndexPage}

{/block:Quote} {block:Link}

{Name}

{block:Description}{Description}{/block:Description} {block:IndexPage} {/block:IndexPage}

{/block:Link} {block:Chat}

{block:Label}{Label}{/block:Label} {Line}

{block:IndexPage} {/block:IndexPage}

{/block:Chat} {block:Audio}

{AudioPlayerBlack}

{block:IndexPage}{block:IfShowCaptions} {block:Caption}{Caption}{/block:Caption} {/block:IfShowCaptions}{/block:IndexPage} {block:IndexPage} {/block:IndexPage}

{/block:Audio} {block:Answer}

{Question}

@{Asker}

{Answer} {block:IndexPage} {/block:IndexPage}

{/block:Answer} {block:Photoset}

{block:IndexPage} {/block:IndexPage} {Photoset-400}

{block:IndexPage}{block:IfShowCaptions} {block:Caption}

{Caption}

{/block:Caption} {/block:IfShowCaptions}{/block:IndexPage}

{/block:Photoset} {block:Video}

{block:IndexPage} {/block:IndexPage} {Video-400}

{block:IndexPage}{block:IfShowCaptions} {block:Caption}

{Caption}

{/block:Caption} {/block:IfShowCaptions}{/block:IndexPage}

{/block:Video} {block:Photo}

{block:IndexPage} {/block:IndexPage} {block:IndexPage}

{/block:IndexPage} {block:PermalinkPage} {LinkOpenTag} {PhotoAlt}

{LinkCloseTag} {/block:PermalinkPage}

{block:IndexPage}{block:IfShowCaptions} {block:Caption}

{Caption}

{/block:Caption} {/block:IfShowCaptions}{/block:IndexPage}

{/block:Photo} {block:IfShowTags}{block:IndexPage}{block:HasTags}

{lang:Tagged}: {block:Tags}#{Tag} {/block:Tags}

{/block:HasTags}{/block:IndexPage}{/block:IfShowTags} {block:PermalinkPage}

{block:Caption}

{Caption}

{/block:Caption} {block:HasTags}

{lang:Tagged}: {block:Tags}#{Tag} {/block:Tags}

{/block:HasTags}

{block:Date}{12Hour}:{Minutes}:{Seconds} @ {MonthNumber}/{DayOfMonth}/{Year}
{/block:Date} {block:NoteCount}{NoteCountWithLabel}
{/block:NoteCount}{block:RebloggedFrom} Reblogged from {ReblogParentName}
Posted by {ReblogRootName}{block:RebloggedFrom}

{block:PostNotes} {PostNotes} {/block:PostNotes}

{/block:PermalinkPage}

{block:ContentSource} {/block:ContentSource} {/block:Posts} ```

```

``` ```

desandro / masonry

Masonry & Infinite-Scroll on tumblr! #293

{Title}

{Name}