diff --git a/README.md b/README.md
index e30b2bb6..c0a364bd 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,8 @@ A 3d-printable housing can be found here: https://www.thingiverse.com/thing:4571
 
 ##### Rolling - (2020-09-11)
 
+* Improved handling of PreValue
+* Improved error handling for automated processflow (reduce spontaneous reboot - see Issues)
 * Support of spaces in WLan SSID or password
 
 2020-09-10
diff --git a/code/lib/jomjol_fileserver_ota/server_ota.cpp b/code/lib/jomjol_fileserver_ota/server_ota.cpp
index ecd17a44..11359885 100644
--- a/code/lib/jomjol_fileserver_ota/server_ota.cpp
+++ b/code/lib/jomjol_fileserver_ota/server_ota.cpp
@@ -400,18 +400,21 @@ void task_reboot(void *pvParameter)
     vTaskDelete(NULL); //Delete this task if it exits from the loop above
 }
 
+void doReboot(){
+    LogFile.WriteToFile("Reboot - now");
+    KillTFliteTasks();
+    xTaskCreate(&task_reboot, "reboot", configMINIMAL_STACK_SIZE * 64, NULL, 10, NULL);
+}
+
 
 esp_err_t handler_reboot(httpd_req_t *req)
 {
     LogFile.WriteToFile("handler_reboot");
     ESP_LOGI(TAGPARTOTA, "!!! System will restart within 5 sec!!!");
-
     const char* resp_str = "!!! System will restart within 5 sec!!!";
     httpd_resp_send(req, resp_str, strlen(resp_str)); 
     
-    KillTFliteTasks();
-
-    xTaskCreate(&task_reboot, "reboot", configMINIMAL_STACK_SIZE * 64, NULL, 10, NULL);
+    doReboot();
 
     return ESP_OK;
 }
diff --git a/code/lib/jomjol_fileserver_ota/server_ota.h b/code/lib/jomjol_fileserver_ota/server_ota.h
index 4d6df7d1..440cb67d 100644
--- a/code/lib/jomjol_fileserver_ota/server_ota.h
+++ b/code/lib/jomjol_fileserver_ota/server_ota.h
@@ -7,4 +7,5 @@
 static const char *TAGPARTOTA = "server_ota";
 
 void register_server_ota_sdcard_uri(httpd_handle_t server);
-void CheckOTAUpdate();
\ No newline at end of file
+void CheckOTAUpdate();
+void doReboot();
\ No newline at end of file
diff --git a/code/lib/jomjol_flowcontroll/ClassFlowAlignment.cpp b/code/lib/jomjol_flowcontroll/ClassFlowAlignment.cpp
index f14cc161..0618fa17 100644
--- a/code/lib/jomjol_flowcontroll/ClassFlowAlignment.cpp
+++ b/code/lib/jomjol_flowcontroll/ClassFlowAlignment.cpp
@@ -1,5 +1,7 @@
 #include "ClassFlowAlignment.h"
 
+#include "ClassLogFile.h"
+
 ClassFlowAlignment::ClassFlowAlignment()
 {
     initalrotate = 0;
@@ -83,11 +85,22 @@ bool ClassFlowAlignment::doFlow(string time)
     output = FormatFileName(output);
     output2 = FormatFileName(output2);
 
-    CRotate *rt;
 
     if (initalrotate != 0)
     {
+        CRotate *rt;
         rt = new CRotate(input);
+        if (!rt->ImageOkay()){
+            LogFile.WriteToFile("ClassFlowAlignment::doFlow CRotate raw.jpg not okay!");
+            delete rt;
+            LogFile.WriteToFile("ClassFlowAlignment::doFlow 1x reload.");
+            rt = new CRotate(input);
+            if (!rt->ImageOkay()){
+                LogFile.WriteToFile("ClassFlowAlignment::doFlow Reload auch nicht erfolgreich!");
+                delete rt;
+                return false;
+            }
+        }
         rt->Rotate(this->initalrotate);
         rt->SaveToFile(output);
         delete rt;
diff --git a/code/lib/jomjol_flowcontroll/ClassFlowControll.cpp b/code/lib/jomjol_flowcontroll/ClassFlowControll.cpp
index df54a29c..f9c49f2f 100644
--- a/code/lib/jomjol_flowcontroll/ClassFlowControll.cpp
+++ b/code/lib/jomjol_flowcontroll/ClassFlowControll.cpp
@@ -3,6 +3,7 @@
 #include "ClassLogFile.h"
 #include "time_sntp.h"
 #include "Helper.h"
+#include "server_ota.h"
 
 std::string ClassFlowControll::doSingleStep(std::string _stepname, std::string _host){
     bool found = false;
@@ -144,13 +145,29 @@ bool ClassFlowControll::doFlow(string time)
 {
     bool result = true;
     std::string zw_time;
+    int repeat = 0;
+
     for (int i = 0; i < FlowControll.size(); ++i)
     {
         zw_time = gettimestring("%Y%m%d-%H%M%S");
         aktstatus = zw_time + ": " + FlowControll[i]->name();
         string zw = "FlowControll.doFlow - " + FlowControll[i]->name();
         LogFile.WriteToFile(zw);
-        result = result && FlowControll[i]->doFlow(time);
+        if (!FlowControll[i]->doFlow(time)){
+            repeat++;
+            LogFile.WriteToFile("Fehler im vorheriger Schritt - wird zum " + to_string(repeat) + ". Mal wiederholt");
+            i = i-2;    // vorheriger Schritt muss wiederholt werden (vermutlich Bilder aufnehmen)
+            result = false;
+            if (repeat > 5) {
+                LogFile.WriteToFile("Wiederholung 5x nicht erfolgreich --> reboot");
+                doReboot();
+                // Schritt wurde 5x wiederholt --> reboot
+            }
+        }
+        else
+        {
+            result = true;
+        }
     }
     zw_time = gettimestring("%Y%m%d-%H%M%S");    
     aktstatus = zw_time + ": Flow is done";
diff --git a/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.cpp b/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.cpp
index ddce7ee5..e84c3ff9 100644
--- a/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.cpp
+++ b/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.cpp
@@ -56,6 +56,25 @@ bool ClassFlowPostProcessing::LoadPreValue(void)
     difference /= 60;
     if (difference > PreValueAgeStartup)
         return false;
+
+    Value = PreValue;
+    ReturnValue = to_string(Value);
+    ReturnValueNoError = ReturnValue; 
+
+    // falls es Analog gibt, dann die Anzahl der Nachkommastellen feststellen und entsprechend runden:   
+    for (int i = 0; i < ListFlowControll->size(); ++i)
+    {
+        if (((*ListFlowControll)[i])->name().compare("ClassFlowAnalog") == 0)
+        {
+            int AnzahlNachkomma = ((ClassFlowAnalog*)(*ListFlowControll)[i])->AnzahlROIs();
+            std::stringstream stream;
+            stream << std::fixed << std::setprecision(AnzahlNachkomma) << Value;
+            ReturnValue = stream.str();
+            ReturnValueNoError = ReturnValue;
+        }
+    }
+
+    
     return true;
 }
 
@@ -143,21 +162,6 @@ bool ClassFlowPostProcessing::ReadParameter(FILE* pfile, string& aktparamgraph)
             {
                 PreValueUse = true;
                 PreValueOkay = LoadPreValue();
-                if (PreValueOkay)
-                {
-                    Value = PreValue;
-                    for (int i = 0; i < ListFlowControll->size(); ++i)
-                    {
-                        if (((*ListFlowControll)[i])->name().compare("ClassFlowAnalog") == 0)
-                        {
-                            int AnzahlNachkomma = ((ClassFlowAnalog*)(*ListFlowControll)[i])->AnzahlROIs();
-                            std::stringstream stream;
-                            stream << std::fixed << std::setprecision(AnzahlNachkomma) << Value;
-                            ReturnValue = stream.str();
-                            ReturnValueNoError = ReturnValue;
-                        }
-                    }
-                }
             }
         }
         if ((zerlegt[0] == "CheckDigitIncreaseConsistency") && (zerlegt.size() > 1))
@@ -235,17 +239,17 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
     //    isdigit = true; digit = "12N";
     //    isanalog = true; analog = "456";
 
+    if (isdigit)
+        ReturnRawValue = digit;
+    if (isdigit && isanalog)
+        ReturnRawValue = ReturnRawValue + ".";
+    if (isanalog)
+        ReturnRawValue = ReturnRawValue + analog;    
 
     if (!PreValueUse || !PreValueOkay)
     {
-        if (isdigit)
-            ReturnValue = digit;
-        if (isdigit && isanalog)
-            ReturnValue = ReturnValue + ".";
-        if (isanalog)
-            ReturnValue = ReturnValue + analog;
-
-        ReturnRawValue = ReturnValue;
+        ReturnValue = ReturnRawValue;
+        ReturnValueNoError = ReturnRawValue;
 
         if ((findDelimiterPos(ReturnValue, "N") == std::string::npos) && (ReturnValue.length() > 0))
         {
@@ -254,19 +258,13 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
                 ReturnValue.erase(0, 1);
             }
             Value = std::stof(ReturnValue);
+            ReturnValueNoError = ReturnValue;
+            
             SavePreValue(Value, zwtime);
         }
-
         return true;
     }
 
-    if (isdigit)
-        ReturnRawValue = digit;
-    if (isdigit && isanalog)
-        ReturnRawValue = ReturnRawValue + ".";
-    if (isanalog)
-        ReturnRawValue = ReturnRawValue + analog;
-
     if (isdigit)
     {
         int lastanalog = -1;
@@ -295,14 +293,16 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
         stream << std::fixed << std::setprecision(AnzahlNachkomma) << Value;
         zwvalue = stream.str();
     }
-
-    if (useMaxRateValue && (abs(Value - PreValue) > MaxRateValue))
+    else
     {
-        error = "Rate too high - Returned old value - read value: " + zwvalue;
-        Value = PreValue;
-        stream.str("");
-        stream << std::fixed << std::setprecision(AnzahlNachkomma) << Value;
-        zwvalue = stream.str();
+        if (useMaxRateValue && (abs(Value - PreValue) > MaxRateValue))
+        {
+            error = "Rate too high - Returned old value - read value: " + zwvalue;
+            Value = PreValue;
+            stream.str("");
+            stream << std::fixed << std::setprecision(AnzahlNachkomma) << Value;
+            zwvalue = stream.str();
+        }
     }
 
     ReturnValueNoError = zwvalue;
diff --git a/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.h b/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.h
index 2f527d23..b3fba529 100644
--- a/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.h
+++ b/code/lib/jomjol_flowcontroll/ClassFlowPostProcessing.h
@@ -18,15 +18,14 @@ protected:
     bool checkDigitIncreaseConsistency;
 
     string FilePreValue;
-    float PreValue;
-    float Value;
-    string ReturnValue;
-    string ReturnRawValue;
-    string ReturnValueNoError;
+    float PreValue;             // letzter Wert, der gut ausgelesen wurde
+    float Value;                // letzer ausgelesener Wert, inkl. Korrekturen
+    string ReturnRawValue;      // Rohwert (mit N & führenden 0)    
+    string ReturnValue;         // korrigierter Rückgabewert, ggf. mit Fehlermeldung
+    string ReturnValueNoError;  // korrigierter Rückgabewert ohne Fehlermeldung
 
     bool LoadPreValue(void);
 
-
     string ErsetzteN(string, int lastvalueanalog);
 
 public:
diff --git a/code/lib/jomjol_image_proc/CFindTemplate.cpp b/code/lib/jomjol_image_proc/CFindTemplate.cpp
index db947129..9edaf088 100644
--- a/code/lib/jomjol_image_proc/CFindTemplate.cpp
+++ b/code/lib/jomjol_image_proc/CFindTemplate.cpp
@@ -374,6 +374,10 @@ CImageBasis::CImageBasis(std::string _image)
     //    printf("w %d, h %d, b %d, c %d", this->width, this->height, this->bpp, this->channels);
 }
 
+bool CImageBasis::ImageOkay(){
+    return rgb_image != NULL;
+}
+
 CImageBasis::CImageBasis(uint8_t* _rgb_image, int _channels, int _width, int _height, int _bpp)
 {
     this->rgb_image = _rgb_image;
diff --git a/code/lib/jomjol_image_proc/CFindTemplate.h b/code/lib/jomjol_image_proc/CFindTemplate.h
index 58e5e840..c7b525af 100644
--- a/code/lib/jomjol_image_proc/CFindTemplate.h
+++ b/code/lib/jomjol_image_proc/CFindTemplate.h
@@ -36,6 +36,7 @@ class CImageBasis
         void drawCircle(int x1, int y1, int rad, int r, int g, int b, int thickness = 1);
         void setPixelColor(int x, int y, int r, int g, int b);
         void Contrast(float _contrast);
+        bool ImageOkay();
 
 
         CImageBasis();
diff --git a/firmware/bootloader.bin b/firmware/bootloader.bin
index af29e128..a62e024e 100644
Binary files a/firmware/bootloader.bin and b/firmware/bootloader.bin differ
diff --git a/firmware/firmware.bin b/firmware/firmware.bin
index 8bd8328d..96645355 100644
Binary files a/firmware/firmware.bin and b/firmware/firmware.bin differ