diff --git a/src/actions/tutorialBuilderActions.js b/src/actions/tutorialBuilderActions.js
index 03f7662..25304c8 100644
--- a/src/actions/tutorialBuilderActions.js
+++ b/src/actions/tutorialBuilderActions.js
@@ -1,5 +1,7 @@
 import { PROGRESS, BUILDER_CHANGE, BUILDER_ERROR, BUILDER_TITLE, BUILDER_ID, BUILDER_ADD_STEP, BUILDER_DELETE_STEP, BUILDER_CHANGE_STEP, BUILDER_CHANGE_ORDER, BUILDER_DELETE_PROPERTY } from './types';
 
+import data from '../data/hardware.json';
+
 export const changeTutorialBuilder = () => (dispatch) => {
   dispatch({
     type: BUILDER_CHANGE
@@ -162,8 +164,23 @@ export const setSubmitError = () => (dispatch, getState) => {
   }
   for(var i = 0; i < builder.steps.length; i++){
     builder.steps[i].id = i+1;
-    if(i === 0 && (builder.steps[i].hardware === undefined || builder.steps[i].hardware.length < 1)){
-      dispatch(setError(i, 'hardware'));
+    if(i === 0){
+      if(builder.steps[i].requirements && builder.steps[i].requirements.length > 0){
+        var requirements = builder.steps[i].requirements.filter(requirement => typeof(requirement)==='number');
+        if(requirements.length < builder.steps[i].requirements.length){
+          dispatch(changeContent(i, 'requirements', requirements));
+        }
+      }
+      if(builder.steps[i].hardware === undefined || builder.steps[i].hardware.length < 1){
+        dispatch(setError(i, 'hardware'));
+      }
+      else{
+        var hardwareIds = data.map(hardware => hardware.id);
+        var hardware = builder.steps[i].hardware.filter(hardware => hardwareIds.includes(hardware));
+        if(hardware.length < builder.steps[i].hardware.length){
+          dispatch(changeContent(i, 'hardware', hardware));
+        }
+      }
     }
     if(builder.steps[i].headline === undefined || builder.steps[i].headline === ''){
       dispatch(setError(i, 'headline'));
diff --git a/src/components/Tutorial/Builder/BlocklyExample.js b/src/components/Tutorial/Builder/BlocklyExample.js
index 9c64bf4..be7d6f5 100644
--- a/src/components/Tutorial/Builder/BlocklyExample.js
+++ b/src/components/Tutorial/Builder/BlocklyExample.js
@@ -79,8 +79,18 @@ class BlocklyExample extends Component {
     }
   }
 
+
   render() {
     moment.locale('de', localization);
+    var initialXml = this.props.value;
+    // check if value is valid xml;
+    try{
+      Blockly.Xml.textToDom(initialXml);
+    }
+    catch(err){
+      initialXml = null;
+      this.props.setError(this.props.index, 'xml');
+    }
     return (
       <div style={{marginBottom: '10px'}}>
         <FormControlLabel
@@ -100,34 +110,23 @@ class BlocklyExample extends Component {
           <FormHelperText style={{lineHeight: 'initial', marginBottom: '10px'}} className={this.props.classes.errorColor}>Reiche deine Blöcke ein, indem du auf den rot gefärbten Button klickst.</FormHelperText>
         : <FormHelperText style={{lineHeight: 'initial', marginBottom: '10px'}}>Die letzte Einreichung erfolgte um {this.state.input} Uhr.</FormHelperText>
         : null}
-        {this.state.checked ? () => {
-          var initialXml = this.props.value;
-          // check if value is valid xml;
-          try{
-            Blockly.Xml.textToDom(initialXml);
-          }
-          catch(err){
-            initialXml = null;
-            this.props.setError(this.props.index, 'xml');
-          }
-          return(
-            <div>
-              <Grid container className={!this.props.value ? this.props.classes.errorBorder : null}>
-                <Grid item xs={12}>
-                  <BlocklyWindow initialXml={initialXml}/>
-                </Grid>
+        {this.state.checked ?
+          <div>
+            <Grid container className={!this.props.value ? this.props.classes.errorBorder : null}>
+              <Grid item xs={12}>
+                <BlocklyWindow initialXml={initialXml}/>
               </Grid>
-              <Button
-                className={!this.props.value || this.props.error.steps[this.props.index].xml ? this.props.classes.errorButton : null }
-                style={{marginTop: '5px', height: '40px'}}
-                variant='contained'
-                color='primary'
-                onClick={() => {this.props.changeContent(this.props.index, 'xml', this.props.xml); this.setState({input: moment(Date.now()).format('LTS')})}}
-              >
-                {this.props.task ? 'Musterlösung einreichen' : 'Beispiel einreichen'}
-              </Button>
-            </div>
-          )}
+            </Grid>
+            <Button
+              className={!this.props.value || this.props.error.steps[this.props.index].xml ? this.props.classes.errorButton : null }
+              style={{marginTop: '5px', height: '40px'}}
+              variant='contained'
+              color='primary'
+              onClick={() => {this.props.changeContent(this.props.index, 'xml', this.props.xml); this.setState({input: moment(Date.now()).format('LTS')})}}
+            >
+              {this.props.task ? 'Musterlösung einreichen' : 'Beispiel einreichen'}
+            </Button>
+          </div>
         : null}
       </div>
     );
diff --git a/src/components/Tutorial/Builder/Builder.js b/src/components/Tutorial/Builder/Builder.js
index 9b3aa8e..130be52 100644
--- a/src/components/Tutorial/Builder/Builder.js
+++ b/src/components/Tutorial/Builder/Builder.js
@@ -67,15 +67,12 @@ class Builder extends Component {
       reader.onloadend = () => {
         try {
           var result = JSON.parse(reader.result);
-          if(this.checkSteps(result.steps)){
-            alert('Hier');
-            this.props.readJSON(result);
-          }
-          else{
-            this.props.progress(false);
-            alert('die JSON-Datei hat nicht die richtige Form');
+          if(!this.checkSteps(result.steps)){
+            result.steps = [{}];
           }
+          this.props.readJSON(result);
         } catch(err){
+          console.log(err);
           this.props.progress(false);
           alert('ungültige JSON-Datei');
           this.setState({ open: true, file: false, title: 'Ungültige XML', content: 'Die XML-Datei konnte nicht in Blöcke zerlegt werden. Bitte überprüfe den XML-Code und versuche es erneut.' });
@@ -86,34 +83,8 @@ class Builder extends Component {
 
   checkSteps = (steps) => {
     if(!(steps && steps.length > 0)){
-      alert(1);
       return false;
     }
-    steps.map((step, i) => {
-      if(i === 0){
-        if(!(step.requirements &&
-             step.requirements.length > 0 &&
-             step.requirements.filter(requirement => typeof(requirement) === 'number').length === step.requirements.length)){
-          alert(3);
-          return false;
-        }
-        var hardwareIds = data.map(hardware => hardware.id);
-        if(!(step.hardware &&
-             step.hardware.length > 0 &&
-             step.hardware.filter(hardware => typeof(hardware) === 'string' && hardwareIds.includes(hardware)).length === step.hardware.length)){
-          alert(4);
-          return false;
-        }
-      }
-      if(!(step.headline && typeof(step.headline)==='string')){
-        alert(5);
-        return false;
-      }
-      if(!(step.text && typeof(step.text)==='string')){
-        alert(6);
-        return false;
-      }
-    });
     return true;
   }