Added some defensive programming if the site doesn't have recommendations.

layouts/partials/sidebar-for-tiny-theme/recommendations.html

@@ -2,7 +2,7 @@
     <header>
         <h1>Recommendations</h1>
     </header>
-    {{ if .Site.Data.blogrolls.recommendations }}
+    {{ if and (.Site.Data.blogrolls) (.Site.Data.blogrolls.recommendations) }}
         <ul class="blogroll">
             {{ range .Site.Data.blogrolls.recommendations }}        
                 <li><a href="{{ .url }}">{{ .name }}: <span>{{ (urls.Parse .url).Hostname }}</span></a></li>

plugin.json

@@ -1,5 +1,5 @@
 {
-    "version": "1.0.0",
+    "version": "1.0.1",
     "title": "Sidebar for Tiny Theme",
     "description": "Adds a sidebar to a blog using Tiny Theme",
     "includes": [