diff --git a/.gitignore b/.gitignore
index 275f856..7da8ecb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 bin/*.pdf
-
+.idea/*
 *.sw*
 .DS_Store
diff --git a/lib/pdf/extract/pdf.rb b/lib/pdf/extract/pdf.rb
index 1054e19..c66a430 100644
--- a/lib/pdf/extract/pdf.rb
+++ b/lib/pdf/extract/pdf.rb
@@ -141,7 +141,8 @@ def invoke_calls filename, spatial_options
             @object_listeners.each_pair do |type, listeners|
               listeners.each do |listener|
                 if objs[type].nil?
-                  raise "#{@pdf.operating_type} is missing a dependency on #{type}"
+                  #raise "#{@pdf.operating_type} is missing a dependency on #{type}"
+                  next
                 end
                 objs[type].each { |obj| listener.call obj }
               end
diff --git a/lib/pdf/extract/spatial.rb b/lib/pdf/extract/spatial.rb
index 6f0eca4..c5da921 100644
--- a/lib/pdf/extract/spatial.rb
+++ b/lib/pdf/extract/spatial.rb
@@ -148,7 +148,7 @@ def self.contains? a, b, padding=0
 
     def self.overlap? from, by, a, b
       a_top = a[from] + a[by]
-      b_top = b[rom] + b[by]
+      b_top = b[from] + b[by]
 
       (b_top <= a_top && b_top >= a[from]) || (b[from] >= a[from] && b[from] <= b_top)
     end
diff --git a/pdf-extract.gemspec b/pdf-extract.gemspec
index 8470ac1..a815111 100644
--- a/pdf-extract.gemspec
+++ b/pdf-extract.gemspec
@@ -10,7 +10,7 @@ Gem::Specification.new do |s|
   s.homepage = "http://github.com/CrossRef/pdfextract"
   s.required_ruby_version = ">=1.9.1"
 
-  s.add_dependency 'pdf-reader', '= 1.3.3'
+  s.add_dependency 'pdf-reader', '= 1.2.0'
   s.add_dependency 'nokogiri', '>= 1.5.0'
   s.add_dependency 'prawn', '>= 0.11.1'
   s.add_dependency 'sqlite3', '>= 1.3.4'