diff --git a/src/octoprint/plugins/lasercutterprofiles/profile.py b/src/octoprint/plugins/lasercutterprofiles/profile.py
index 5fd7ed71..a8109be6 100644
--- a/src/octoprint/plugins/lasercutterprofiles/profile.py
+++ b/src/octoprint/plugins/lasercutterprofiles/profile.py
@@ -135,7 +135,7 @@ class LaserCutterProfileManager(object):
 	def exists(self, identifier):
 		if identifier is None:
 			return False
-		elif identifier == "_default":
+		elif identifier == "_mrbeam_junior" or identifier == "_mrbeam_senior":
 			return True
 		else:
 			path = self._get_profile_path(identifier)
@@ -155,10 +155,8 @@ class LaserCutterProfileManager(object):
 
 			results[identifier] = dict_merge(self._load_default("_mrbeam_junior"), profile)
 			
-		if(not results.has_key("_mrbeam_junior")):
-			results["_mrbeam_junior"] = self._load_default("_mrbeam_junior")
-		if(not results.has_key("_mrbeam_senior")):
-			results["_mrbeam_senior"] = self._load_default("_mrbeam_senior")
+		results["_mrbeam_junior"] = self._load_default("_mrbeam_junior")
+		results["_mrbeam_senior"] = self._load_default("_mrbeam_senior")
 		return results
 
 	def _load_all_identifiers(self):
@@ -211,7 +209,6 @@ class LaserCutterProfileManager(object):
 			return False
 
 	def _load_default(self, defaultModel = None):
-		default_overrides = self.settings.get([defaultModel])
 		default = copy.deepcopy(self.__class__.default)
 		if(defaultModel is not None and defaultModel == "_mrbeam_senior"):
 			default['volume']['width'] *= 2
@@ -219,12 +216,7 @@ class LaserCutterProfileManager(object):
 			default['model'] = "Senior"
 			default['id'] = "_mrbeam_senior"
 		
-		if(default_overrides is None):
-			merge = default
-		else:
-			merge = dict_merge(default, default_overrides)
-
-		profile = self._ensure_valid_profile(merge)
+		profile = self._ensure_valid_profile(default)
 		if not profile:
 			self._logger.warn("Invalid default profile after applying overrides")
 			raise InvalidProfileError()
diff --git a/src/octoprint/plugins/lasercutterprofiles/static/js/lasercutterprofiles.js b/src/octoprint/plugins/lasercutterprofiles/static/js/lasercutterprofiles.js
index 9a819214..17efbc44 100644
--- a/src/octoprint/plugins/lasercutterprofiles/static/js/lasercutterprofiles.js
+++ b/src/octoprint/plugins/lasercutterprofiles/static/js/lasercutterprofiles.js
@@ -89,6 +89,7 @@ $(function() {
         var defaultProfile = undefined;
         var currentProfile = undefined;
         var currentProfileData = undefined;
+		console.log("lasercutterprofiles", data.profiles);
         _.each(data.profiles, function(entry) {
             if (entry.default) {
                 defaultProfile = entry.id;
@@ -207,6 +208,10 @@ $(function() {
             self.updateProfile(undefined, callback);
         }
     };
+	
+	self.isReadOnly = function (data){
+		return (data.id === "_mrbeam_senior" || data.id === "_mrbeam_junior"); 
+	};
 
     self._editorData = function() {
         var profile = {
diff --git a/src/octoprint/plugins/lasercutterprofiles/templates/lasercutterprofiles_settings.jinja2 b/src/octoprint/plugins/lasercutterprofiles/templates/lasercutterprofiles_settings.jinja2
index 9d95654b..497667e8 100644
--- a/src/octoprint/plugins/lasercutterprofiles/templates/lasercutterprofiles_settings.jinja2
+++ b/src/octoprint/plugins/lasercutterprofiles/templates/lasercutterprofiles_settings.jinja2
@@ -14,7 +14,7 @@
         <td class="settings_printerProfiles_profiles_name"><span class="icon-star" data-bind="invisible: !isdefault()"></span> <span data-bind="text: name"></span></td>
         <td class="settings_printerProfiles_profiles_model" data-bind="text: model"></td>
         <td class="settings_printerProfiles_profiles_action">
-            <a href="#" class="icon-star" title="{{ _('Set as default profile') }}" data-bind="click: function() { $root.makeDefault($data); }"></a>&nbsp;|&nbsp;<a href="#" class="icon-pencil" title="{{ _('Edit Profile') }}" data-bind="click: function() { $root.showEditProfileDialog($data); }"></a>&nbsp;|&nbsp;<a href="#" class="icon-trash" title="{{ _('Delete Profile') }}" data-bind="click: function() { $root.removeProfile($data); }"></a>
+            <a href="#" class="icon-star" title="{{ _('Set as default profile') }}" data-bind="click: function() { $root.makeDefault($data); }"></a>&nbsp;|&nbsp;<a href="#" class="icon-pencil" title="{{ _('Edit Profile') }}" data-bind="css: {disabled:$root.isReadOnly}, click: function() { if(!$root.isReadOnly($data)) $root.showEditProfileDialog($data); }"></a>&nbsp;|&nbsp;<a href="#" class="icon-trash" title="{{ _('Delete Profile') }}" data-bind="css: {disabled:$root.isReadOnly}, click: function() { if(!$root.isReadOnly($data)) $root.removeProfile($data); }"></a>
         </td>
     </tr>
     </tbody>
diff --git a/src/octoprint/plugins/svgtogcode/static/js/working_area.js b/src/octoprint/plugins/svgtogcode/static/js/working_area.js
index 6824ac77..5e462b85 100644
--- a/src/octoprint/plugins/svgtogcode/static/js/working_area.js
+++ b/src/octoprint/plugins/svgtogcode/static/js/working_area.js
@@ -25,8 +25,8 @@ function WorkingAreaViewModel(params) {
 	self.workingAreaHeightMM = ko.observable(undefined);
 	self.hwRatio = ko.computed(function(){
 		// y/x = 297/216 respectively 594/432
-		var h = self.workingAreaWidthMM();
-		var w = self.workingAreaHeightMM();
+		var w = self.workingAreaWidthMM();
+		var h = self.workingAreaHeightMM();
 //		var h = self.settings.printerProfiles.currentProfileData().volume.depth();
 //		var w = self.settings.printerProfiles.currentProfileData().volume.width();
 		var ratio = h / w;