diff --git a/components/video.py b/components/video.py
index c529658..bd1bf96 100644
--- a/components/video.py
+++ b/components/video.py
@@ -10,8 +10,15 @@ from . import __base__
 class Video:
     '''Video Component Frame-Fetcher'''
     def __init__(self, **kwargs):
-        mandatoryArgs = ['ffmpeg', 'videoPath', 'width', 'height',
-            'frameRate', 'chunkSize', 'parent']
+        mandatoryArgs = [
+            'ffmpeg',  # path to ffmpeg, usually core.FFMPEG_BIN
+            'videoPath',
+            'width',
+            'height',
+            'frameRate',  # frames per second
+            'chunkSize',  # number of bytes in one frame
+            'parent'
+        ]
         for arg in mandatoryArgs:
             try:
                 exec('self.%s = kwargs[arg]' % arg)
diff --git a/core.py b/core.py
index e69de50..4f30973 100644
--- a/core.py
+++ b/core.py
@@ -71,7 +71,7 @@ class Core():
         return endI
 
     def updateComponent(self, i):
-        print('updating %s' % self.selectedComponents[i])
+        # print('updating %s' % self.selectedComponents[i])
         self.selectedComponents[i].update()
 
     def moduleIndexFor(self, compIndex):
@@ -89,7 +89,7 @@ class Core():
         with open(internalPath, 'r') as f:
             internalData = [line for line in f]
         try:
-            saveValueStore = dict(eval(internalData[0].strip()))
+            saveValueStore = Core.presetFromString(internalData[0].strip())
             self.createPresetFile(
                 compName, vers,
                 origName, saveValueStore,
@@ -120,7 +120,7 @@ class Core():
                 f.write('[Components]\n')
                 f.write('%s\n' % compName)
                 f.write('%s\n' % str(vers))
-            f.write(Core.stringOrderedDict(saveValueStore))
+            f.write(Core.presetToString(saveValueStore))
 
     def createProjectFile(self, filepath):
         '''Create a project file (.avp) using the current program state'''
@@ -136,7 +136,7 @@ class Core():
                     saveValueStore = comp.savePreset()
                     f.write('%s\n' % str(comp))
                     f.write('%s\n' % str(comp.version()))
-                    f.write('%s\n' % Core.stringOrderedDict(saveValueStore))
+                    f.write('%s\n' % Core.presetToString(saveValueStore))
             return True
         except:
             return False
@@ -244,6 +244,10 @@ class Core():
         return badName
 
     @staticmethod
-    def stringOrderedDict(dictionary):
+    def presetToString(dictionary):
         sorted_ = OrderedDict(sorted(dictionary.items(), key=lambda t: t[0]))
         return repr(sorted_)
+
+    @staticmethod
+    def presetFromString(string):
+        return dict(eval(string))
diff --git a/main.py b/main.py
index c771aca..7c0727b 100644
--- a/main.py
+++ b/main.py
@@ -1,5 +1,4 @@
 from importlib import import_module
-from collections import OrderedDict
 from PyQt4 import QtGui, uic
 from PyQt4.QtCore import Qt
 import sys
diff --git a/mainwindow.py b/mainwindow.py
index 2f04559..dbbc631 100644
--- a/mainwindow.py
+++ b/mainwindow.py
@@ -1,6 +1,5 @@
 from os.path import expanduser
 from queue import Queue
-from collections import OrderedDict
 from PyQt4 import QtCore, QtGui, uic
 from PyQt4.QtCore import QSettings, Qt
 from PyQt4.QtGui import QMenu
@@ -159,8 +158,8 @@ class MainWindow(QtCore.QObject):
         self.window.pushButton_addComponent.setMenu(self.compMenu)
 
         componentList.dropEvent = self.componentListChanged
-        componentList.clicked.connect(
-            lambda _: self.changeComponentWidget())
+        componentList.itemSelectionChanged.connect(
+            self.changeComponentWidget)
 
         self.window.pushButton_removeComponent.clicked.connect(
             lambda _: self.removeComponent())
@@ -567,7 +566,7 @@ class MainWindow(QtCore.QObject):
                             # version, not used yet
                             i += 1
                         elif i == 2:
-                            saveValueStore = dict(eval(line))
+                            saveValueStore = core.Core.presetFromString(line)
                             self.core.selectedComponents[-1].loadPreset(
                                 saveValueStore)
                             self.updateComponentTitle(-1)
diff --git a/presetmanager.py b/presetmanager.py
index 3036f7a..6708d11 100644
--- a/presetmanager.py
+++ b/presetmanager.py
@@ -1,5 +1,4 @@
 from PyQt4 import QtGui, QtCore
-from collections import OrderedDict
 import string
 import os
 
@@ -171,7 +170,7 @@ class PresetManager(QtGui.QDialog):
             return
         with open(filepath, 'r') as f:
             for line in f:
-                saveValueStore = dict(eval(line.strip()))
+                saveValueStore = core.Core.presetFromString(line.strip())
                 break
         selectedComponents[index].loadPreset(
             saveValueStore,