diff --git a/.gitignore b/.gitignore
index 44a1b60..4c7f2c0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,4 +18,5 @@ tmp
 .tmp
 node_modules/
 .tmp-sprockets/
-
+_site/
+.sass-cache/
diff --git a/bin/flowerbox b/bin/flowerbox
index aa8ecf7..441b0d6 100755
--- a/bin/flowerbox
+++ b/bin/flowerbox
@@ -6,7 +6,19 @@ require 'thor'
 class Flowerbox::CLI < Thor
   include Thor::Actions
 
-  desc "test", "Run the specs found in spec dir, loading spec_helper.rb for configuration details"
+  default_task :help
+
+  def help(*args)
+    if !args.first
+      puts "Flowerbox is a multi-environment, multi-runner JavaScript testing tool."
+      puts "It supports Jasmine and Cucumber.js, and it runs tests on Node.js and Selenium-driven browsers."
+      puts
+    end
+
+    super
+  end
+
+  desc "test [DIR]", "Run the specs found in spec dir, loading spec_helper.rb for configuration details"
   method_options :pwd => :string, :env_options => nil, :runners => :string, :runner => :string, :verbose_server => false
   def test(dir = "spec/javascripts", *files)
     Dir.chdir(pwd) do
@@ -24,7 +36,21 @@ class Flowerbox::CLI < Thor
     end
   end
 
-  desc "transplant DIR", "Convert an existing Jasmine gem-style project to Flowerbox"
+  desc "transplant DIR", "Convert an existing JavaScript testing project to Flowerbox"
+  long_desc <<-TXT
+    `flowerbox transplant` converts an existing JavaScript testing project type
+    to Flowerbox. Currently, you can transplant the following types of projects:
+
+    * Pivotal Labs Jasmine gem-style
+    \x5  (also covers jasmine-headless-webkit)
+
+    These types of projects live in `spec/javascripts` (or the specified directory)
+    and have the file `support/jasmine.yml` that defines what files are loaded
+    at what parts in the test load process. `jasmine.yml` is converted to a
+    Flowerbox `spec_helper.rb` file and placed into `spec/javascripts`.
+
+    Flowerbox will ask before overwriting existing files.
+  TXT
   def transplant(dir)
     Flowerbox.transplant(dir)
   end
@@ -35,7 +61,7 @@ class Flowerbox::CLI < Thor
     puts "Sprockets cache cleaned."
   end
 
-  desc "plant", "Start a new Flowerbox project"
+  desc "plant TYPE [DIR]", "Start a new Flowerbox project of TYPE, potentially specifying a different DIR to install"
   def plant(type, dir = nil)
     env = Flowerbox::TestEnvironment.for(type)
 
@@ -44,16 +70,18 @@ class Flowerbox::CLI < Thor
     directory('.', dir || env.plant_target)
   end
 
-  default_task :test
+  def method_missing(method, *args)
+    if File.directory?(method.to_s)
+      test(method.to_s, *args)
+    else
+      super
+    end
+  end
 
   no_tasks do
     def pwd
       options[:pwd] || Dir.pwd
     end
-
-    def asset_paths
-      Flowerbox.asset_paths.collect { |path| File.join(pwd, path) }
-    end
   end
 end
 
diff --git a/lib/flowerbox.rb b/lib/flowerbox.rb
index 8c9caa2..1e767fe 100644
--- a/lib/flowerbox.rb
+++ b/lib/flowerbox.rb
@@ -1,5 +1,6 @@
 require "flowerbox/version"
 require 'rainbow'
+require 'forwardable'
 
 module Flowerbox
   require 'flowerbox/core_ext/module'
@@ -16,70 +17,29 @@ module Flowerbox
   require 'flowerbox/gathered_result'
 
   require 'flowerbox/reporter'
+  require 'flowerbox/configuration'
 
   if defined?(Rails::Engine)
     require 'flowerbox/rails/engine'
   end
 
-  CACHE_DIR = '.tmp-sprockets'
+  CACHE_DIR = 'tmp/sprockets'
 
   class << self
-    attr_writer :reporters
-    attr_accessor :port
-
     def reset!
-      @spec_patterns = nil
-      @spec_files = nil
-      @asset_paths = nil
-      @reporters = nil
-      @port = nil
+      @configuration = nil
     end
 
-    def spec_patterns
-      @spec_patterns ||= []
-    end
-
-    def asset_paths
-      @asset_paths ||= []
-    end
-
-    def reporters
-      @reporters ||= []
-    end
-
-    def additional_files
-      @additional_files ||= []
-    end
-
-    def test_with(what)
-      self.test_environment = Flowerbox::TestEnvironment.for(what)
-    end
-
-    def run_with(*whats)
-      self.runner_environment = whats.flatten.collect { |what| Flowerbox::Runner.for(what.to_s) }
-    end
-
-    def report_with(*whats)
-      self.reporters = whats.flatten.collect { |what| Flowerbox::Reporter.for(what.to_s) }
+    def configuration
+      @configuration ||= Flowerbox::Configuration.new
     end
 
     def path
       Pathname(File.expand_path('../..', __FILE__))
     end
 
-    attr_accessor :test_environment, :runner_environment, :bare_coffeescript, :server
-
-    def configure
-      yield self
-
-      if spec_patterns.empty?
-        spec_patterns << "**/*_spec*"
-        spec_patterns << "*/*_spec*"
-      end
-
-      if reporters.empty?
-        reporters << Flowerbox::Reporter.for(:progress)
-      end
+    def configure(&block)
+      configuration.configure(&block)
     end
 
     def bare_coffeescript
@@ -115,6 +75,18 @@ module Flowerbox
         break if env.transplant(dir)
       end
     end
+
+    def cache_dir
+      File.join(CACHE_DIR, Flowerbox.test_environment.name)
+    end
+
+    def method_missing(method, *args)
+      if configuration.respond_to?(method)
+        configuration.send(method, *args)
+      else
+        super
+      end
+    end
   end
 end
 
diff --git a/lib/flowerbox/configuration.rb b/lib/flowerbox/configuration.rb
new file mode 100644
index 0000000..1ba758a
--- /dev/null
+++ b/lib/flowerbox/configuration.rb
@@ -0,0 +1,54 @@
+module Flowerbox
+  class Configuration
+    attr_writer :reporters, :backtrace_filter
+    attr_accessor :port
+
+    attr_accessor :test_environment, :runner_environment, :bare_coffeescript, :server
+
+    def spec_patterns
+      @spec_patterns ||= []
+    end
+
+    def asset_paths
+      @asset_paths ||= []
+    end
+
+    def reporters
+      @reporters ||= []
+    end
+
+    def additional_files
+      @additional_files ||= []
+    end
+
+    def backtrace_filter
+      @backtrace_filter ||= []
+    end
+
+    def test_with(what)
+      self.test_environment = Flowerbox::TestEnvironment.for(what)
+    end
+
+    def run_with(*whats)
+      self.runner_environment = whats.flatten.collect { |what| Flowerbox::Runner.for(what.to_s) }
+    end
+
+    def report_with(*whats)
+      self.reporters = whats.flatten.collect { |what| Flowerbox::Reporter.for(what.to_s) }
+    end
+
+    def configure
+      yield self
+
+      if spec_patterns.empty?
+        spec_patterns << "**/*_spec*"
+        spec_patterns << "*/*_spec*"
+      end
+
+      if reporters.empty?
+        reporters << Flowerbox::Reporter.for(:progress)
+      end
+    end
+  end
+end
+
diff --git a/lib/flowerbox/reporter/console_base.rb b/lib/flowerbox/reporter/console_base.rb
index 7d1fdbe..de167d9 100644
--- a/lib/flowerbox/reporter/console_base.rb
+++ b/lib/flowerbox/reporter/console_base.rb
@@ -20,7 +20,7 @@ module Flowerbox::Reporter
       puts result.name.join(" - ").foreground(:red)
       result.failures.each do |failure|
         puts "  " + failure.message.foreground(:red) + " [" + failure.runners.join(',') + "] " + path_for(failure)
-        puts failure.stack.join("\n").foreground(:red) if failure.exception?
+        puts failure.filtered_stack.join("\n").foreground(:red) if failure.exception?
       end
     end
 
diff --git a/lib/flowerbox/reporter/verbose.rb b/lib/flowerbox/reporter/verbose.rb
index 6cf2b32..02f8e71 100644
--- a/lib/flowerbox/reporter/verbose.rb
+++ b/lib/flowerbox/reporter/verbose.rb
@@ -12,6 +12,8 @@ module Flowerbox::Reporter
       if result.name
         result.name.each_with_index do |name, index|
           if @name_stack[index] != name
+            @name_stack = []
+
             if name != result.name.last
               message = name
             else
diff --git a/lib/flowerbox/result/failure_message.rb b/lib/flowerbox/result/failure_message.rb
index 6dc5c2a..0f4f036 100644
--- a/lib/flowerbox/result/failure_message.rb
+++ b/lib/flowerbox/result/failure_message.rb
@@ -34,6 +34,19 @@ module Flowerbox::Result
       @data['stack'] || []
     end
 
+    def filtered_stack
+      filtered_stack = stack.reject { |line|
+        Flowerbox.backtrace_filter.any? { |filter| line[filter] }
+      }.collect { |line|
+        line.gsub(%r{\.coffee:(\d+)}) do |_|
+          ".coffee:~#{($1.to_i * 0.67 + 1).to_i}"
+        end
+      }
+
+      filtered_stack.shift if exception?
+      filtered_stack
+    end
+
     def first_local_stack
       @first_local_stack ||= stack[1..-1].find do |line|
         !system_files.any? { |file| line[%r{\(#{file}}] }
@@ -41,7 +54,7 @@ module Flowerbox::Result
     end
 
     def exception?
-      stack[0][%r{^.+Error: }]
+      (stack[0] || '')[%r{^.+Error: }]
     end
   end
 end
diff --git a/lib/flowerbox/run/base.rb b/lib/flowerbox/run/base.rb
index fe2e134..418c3a2 100644
--- a/lib/flowerbox/run/base.rb
+++ b/lib/flowerbox/run/base.rb
@@ -35,14 +35,16 @@ module Flowerbox::Run
     def sprockets
       require 'flowerbox/sprockets_handler'
 
-      Flowerbox::SprocketsHandler.new(
-        :asset_paths => [
-          Flowerbox.path.join("lib/assets/javascripts"),
-          Flowerbox.path.join("vendor/assets/javascripts"),
-          @dir,
-          Flowerbox.asset_paths
-        ].flatten
-      )
+      Flowerbox::SprocketsHandler.new(:asset_paths => asset_paths)
+    end
+
+    def asset_paths
+      [
+        Flowerbox.path.join("lib/assets/javascripts"),
+        Flowerbox.path.join("vendor/assets/javascripts"),
+        @dir,
+        Flowerbox.asset_paths
+      ].flatten
     end
 
     def spec_files
diff --git a/lib/flowerbox/runner/base.rb b/lib/flowerbox/runner/base.rb
index 4ccedfc..e63ee9d 100644
--- a/lib/flowerbox/runner/base.rb
+++ b/lib/flowerbox/runner/base.rb
@@ -57,7 +57,20 @@ module Flowerbox
 
           puts "Flowerbox running your #{Flowerbox.test_environment.name} tests on #{console_name}..."
 
-          server.start
+          attempts = 3
+
+          while true
+            begin
+              server.start
+
+              break
+            rescue Flowerbox::Server::ServerDiedError
+              attempts -= 1
+              raise RunnerDiedError.new if attempts == 0
+
+              Flowerbox.server = nil
+            end
+          end
 
           yield
 
diff --git a/lib/flowerbox/runner/selenium.rb b/lib/flowerbox/runner/selenium.rb
index 770389c..602668b 100644
--- a/lib/flowerbox/runner/selenium.rb
+++ b/lib/flowerbox/runner/selenium.rb
@@ -38,6 +38,10 @@ module Flowerbox
 <html>
   <head>
     <title>Flowerbox - #{Flowerbox.test_environment.name} Runner</title>
+  </head>
+  <body>
+    <h1>Flowerbox - #{Flowerbox.test_environment.name} Runner</h1>
+    <pre id="queue"></pre>
     <script type="text/javascript">
 console._log = console.log;
 
@@ -47,10 +51,6 @@ console.log = function(msg) {
 }
     </script>
     #{template_files.join("\n")}
-  </head>
-  <body>
-    <h1>Flowerbox - #{Flowerbox.test_environment.name} Runner</h1>
-    <pre id="queue"></pre>
     <script type="text/javascript">
       Flowerbox.environment = '#{name}';
       Flowerbox.onQueueStateChange = function(msg) {
diff --git a/lib/flowerbox/server.rb b/lib/flowerbox/server.rb
index e746db6..97b016d 100644
--- a/lib/flowerbox/server.rb
+++ b/lib/flowerbox/server.rb
@@ -9,6 +9,7 @@ module Flowerbox
     attr_reader :options
 
     class MissingRackApp < StandardError ; end
+    class ServerDiedError < StandardError ; end
 
     def initialize(options = {})
       @options = { :logging => false }.merge(options || {})
@@ -44,7 +45,7 @@ module Flowerbox
         sleep 0.1
       end
 
-      raise StandardError.new("Server died") if !@server_thread[:server].running?
+      raise ServerDiedError.new if !@server_thread[:server].running?
     end
 
     def stop
diff --git a/lib/flowerbox/sprockets_handler.rb b/lib/flowerbox/sprockets_handler.rb
index a0bb219..1f8d247 100644
--- a/lib/flowerbox/sprockets_handler.rb
+++ b/lib/flowerbox/sprockets_handler.rb
@@ -2,6 +2,7 @@ require 'sprockets'
 require 'sprockets/engines'
 require 'forwardable'
 require 'sprockets-vendor_gems'
+require 'fileutils'
 
 module Flowerbox
   class SprocketsHandler
@@ -39,7 +40,9 @@ module Flowerbox
       return @environment if @environment
 
       @environment = Sprockets::Environment.new
-      @environment.cache = Sprockets::Cache::FileStore.new(Flowerbox::CACHE_DIR)
+      FileUtils.rm_rf(Flowerbox.cache_dir)
+
+      @environment.cache = Sprockets::Cache::FileStore.new(Flowerbox.cache_dir)
 
       self.class.gem_asset_paths.each { |path| append_path(path) }
       options[:asset_paths].each { |path| append_path(path) }
@@ -59,8 +62,8 @@ module Flowerbox
       asset_path = asset.pathname.to_s
 
       environment.paths.each do |path|
-        if asset_path[%r{^#{path}}]
-          return asset_path.gsub(%r{^#{path}/}, '')
+        if result = asset_path[%r{^#{path}/(.*)}, 1]
+          return result
         end
       end
 
diff --git a/lib/flowerbox/unique_asset_list.rb b/lib/flowerbox/unique_asset_list.rb
index 03353a7..47fe21b 100644
--- a/lib/flowerbox/unique_asset_list.rb
+++ b/lib/flowerbox/unique_asset_list.rb
@@ -6,10 +6,19 @@ module Flowerbox
       super([])
 
       @sprockets = sprockets
+
+      @included = {}
     end
 
     def add(files)
-      [ files ].flatten.each { |file| self << file if !include?(file) }
+      [ files ].flatten.each do |file|
+        self << file if !included?(file)
+      end
+    end
+
+    def <<(file)
+      super(file)
+      @included[file.pathname.to_s] = true
     end
 
     def to_json
@@ -17,8 +26,8 @@ module Flowerbox
     end
 
     private
-    def include?(file)
-      any? { |other_file| other_file.pathname.to_s == file.pathname.to_s }
+    def included?(file)
+      @included[file.pathname.to_s]
     end
   end
 end