diff --git a/sorteerhoed/central_management.py b/sorteerhoed/central_management.py
index f9ead4a..a54d9a7 100644
--- a/sorteerhoed/central_management.py
+++ b/sorteerhoed/central_management.py
@@ -15,6 +15,7 @@ from sorteerhoed.Signal import Signal
 import io
 from PIL import Image
 import datetime
+from shutil import copyfile
 
 
 class CentralManagement():
@@ -99,6 +100,7 @@ class CentralManagement():
                 time.sleep(.5)
             
         finally:
+            self.logger.warning("Stopping Central Managment")
             self.isRunning.clear()
             self.server.stop()
             
@@ -183,7 +185,11 @@ class CentralManagement():
                         #{'event': {'HITGroupId': '301G7MYOAJ85NEW128ZDGF5DSBW53S', 'EventType': 'AssignmentAbandoned', 'EventTimestamp': '2019-10-23T20:23:06Z', 'HITId': '3JHB4BPSFKKFQ263K4EFULI3LC79QJ', 'AssignmentId': '3U088ZLJVL450PB6MJZUIIUCB6VW0Y', 'WorkerId': 'A1CK46PK9VEUH5', 'HITTypeId': '3EYXOXDEN7RX0YSMN4UMVN01AYKZJ0'}}
                         sqsHit.accept_time = None
                         sqsHit.open_page_at = None
-                        self.reset()
+                        if self.currentHit.id == sqsHit.id:
+                            if not sqsHit.submit_page_at:
+                                self.reset()
+                            else:
+                                sqsHit.submit_hit_at = datetime.datetime.utcnow() # fake submit
                         if updateStatus:
                             self.setLight(False)
                                                     
@@ -191,7 +197,11 @@ class CentralManagement():
                         self.logger.info(f'Set status progress to returned')
                         sqsHit.accept_time = None
                         sqsHit.open_page_at = None
-                        self.reset()
+                        if self.currentHit.id == sqsHit.id:
+                            if not sqsHit.submit_page_at:
+                                self.reset()
+                            else:
+                                sqsHit.submit_hit_at = datetime.datetime.utcnow() # fake submit
                         if updateStatus:
                             self.setLight(False)
                         # {'event': {'HITGroupId': '301G7MYOAJ85NEW128ZDGF5DSBW53S', 'EventType': 'AssignmentReturned', 'EventTimestamp': '2019-10-23T20:16:47Z', 'HITId': '3IH9TRB0FBAKKZFP3JUD6D9YWQ1I1F', 'AssignmentId': '3BF51CHDTWLN3ZGHRKDUHFKPWIJ0H3', 'WorkerId': 'A1CK46PK9VEUH5', 'HITTypeId': '3EYXOXDEN7RX0YSMN4UMVN01AYKZJ0'}}
@@ -308,26 +318,34 @@ class CentralManagement():
         """
         Run scanimage on scaner and returns a string with the filename
         """
-        with self.scanLock:
-            self.eventQueue.put(Signal('scan.start'))
-            cmd = [
-                'sudo', 'scanimage', '-d', 'epkowa', '--format', 'jpeg',
+        
+        cmd = [
+            'sudo', 'scanimage', '-d', 'epkowa', '--format', 'jpeg',
                 '--resolution=100', '-l','20','-t','30','-x',str(185),
             '-y',str(245)
-            ]
-            self.logger.info(f"{cmd}")
-            filename = self.currentHit.getImagePath()
+        ]
+        self.logger.info(f"{cmd}")
+        filename = self.currentHit.getImagePath()
+            
+        with self.scanLock:
+            self.eventQueue.put(Signal('scan.start'))
             proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
             # opens connection to scanner, but only starts scanning when output becomes ready:
             o, e = proc.communicate(80)
         if e:
             self.logger.critical(f"Scanner caused: {e.decode()}")
             #TODO: should clear self.isRunning.clear() ?
-            
-        f = io.BytesIO(o)
-        img = Image.open(f)
-        img = img.transpose(Image.ROTATE_90)
-        img.save(filename)
+        
+        try:
+            f = io.BytesIO(o)
+            img = Image.open(f)
+            img = img.transpose(Image.ROTATE_90)
+            img.save(filename)
+        except Exception as e:
+            self.logger.critical("Cannot create image from scan. Did scanner work?")
+            self.logger.exception(e)
+            # TODO: create 
+            copyfile('www/basic.svg', filename)
         
         self.eventQueue.put(Signal('hit.scanned', {'hit_id':self.currentHit.id}))
         self.eventQueue.put(Signal('scan.finished'))
diff --git a/www/worker_specs/script.js b/www/worker_specs/script.js
index 4cd6701..ce775dd 100644
--- a/www/worker_specs/script.js
+++ b/www/worker_specs/script.js
@@ -27,6 +27,7 @@ spec_names.forEach(function(name){
 
 
 let request_time = timeStamp(),
+    hit_started = false,
     elapsed_time,
     hit_finished = false
 
@@ -36,15 +37,6 @@ let request_time = timeStamp(),
 
 let ws = new ReconnectingWebSocket('ws://localhost:8888/status/ws')
 
-let test = `{"property": "os", "value": "213.127.20.197"}`
-
-// fakeWs(test)
-//
-// function fakeWs(json){
-//
-//
-// }
-
 
 ws.addEventListener('open', () => {
   // ws.send('hi server')
@@ -56,14 +48,21 @@ ws.addEventListener('message', (event) => {
 
   let data = JSON.parse(event.data)
   if(data.property === 'hit_opened') {
-    hit_finished = false
-    request_time = timeStamp()
-    divs[data.property].innerHTML = `${request_time.format('dd mmm HH:MM:ss')}`
+      if(data.value != null){
+        hit_started = true
+        hit_finished = false
+        request_time = timeStamp()
+        divs[data.property].innerHTML = `${request_time.format('dd mmm HH:MM:ss')}`
+      }else{
+        hit_started = false
+      }
   }
   else if(data.property === 'hit_submitted'){
     hit_finished = true;
   }
-  else if(divs[data.property]) divs[data.property].innerHTML = `${data.value}`
+  else if(divs[data.property]){
+    data.value === null ? divs[data.property].innerHTML = `—` : divs[data.property].innerHTML = `${data.value}`
+  }
 })
 
 
@@ -103,8 +102,11 @@ function makeAnimation(){
 function update(step){
 
   if(!hit_finished) elapsed_time = `${new Date((Date.now() - request_time)).format('MM"m "ss"s"')}`
-
-  divs['elapsed_time'].innerHTML = elapsed_time
+  if(hit_started){
+    divs['elapsed_time'].innerHTML = elapsed_time
+  }else{
+    divs['elapsed_time'].innerHTML = `—`
+  }
 }
 
 
@@ -112,3 +114,4 @@ makeAnimation()
 
 
 function timeStamp(){return window.performance && window.performance.now ? window.performance.now() : new Date().getTime()}
+