From d412cd370e1e49830d7e82f56473f6356fe5a4af Mon Sep 17 00:00:00 2001
From: Neil Lalonde <neillalonde@gmail.com>
Date: Thu, 22 May 2014 18:46:22 -0400
Subject: [PATCH] FIX: compare Time with nil error in dev env. Remove nils when
 looking for max mtime.

---
 lib/sass/discourse_stylesheets.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sass/discourse_stylesheets.rb b/lib/sass/discourse_stylesheets.rb
index ea8f75afc11..1eee15afebc 100644
--- a/lib/sass/discourse_stylesheets.rb
+++ b/lib/sass/discourse_stylesheets.rb
@@ -83,7 +83,7 @@ class DiscourseStylesheets
         0
       else
         [ Dir.glob("#{Rails.root}/app/assets/stylesheets/**/*.*css").map {|x| File.mtime(x) }.max,
-          Dir.glob("#{Rails.root}/plugins/**/assets/stylesheets/**/*.*css").map {|x| File.mtime(x) }.max ].max.to_i
+          Dir.glob("#{Rails.root}/plugins/**/assets/stylesheets/**/*.*css").map {|x| File.mtime(x) }.max ].compact.max.to_i
       end
 
       theme = (cs = ColorScheme.enabled) ? "#{cs.id}-#{cs.version}" : 0