diff --git a/slsDetectorSoftware/commonFiles/error_defs.h b/slsDetectorSoftware/commonFiles/error_defs.h
index 01a73ae7d..03730964f 100644
--- a/slsDetectorSoftware/commonFiles/error_defs.h
+++ b/slsDetectorSoftware/commonFiles/error_defs.h
@@ -24,6 +24,7 @@ using namespace std;
 //											0xFFF0000000000000ULL
 #define MULTI_DETECTORS_NOT_ADDED			0x8000000000000000ULL
 #define MULTI_HAVE_DIFFERENT_VALUES			0x4000000000000000ULL
+#define MULTI_CONFIG_FILE_ERROR             0x2000000000000000ULL
 
 // sls errors
 #define CRITICAL_ERROR_MASK 				0xFFFFFFF
@@ -91,6 +92,7 @@ using namespace std;
 #define RESTREAM_STOP_FROM_RECEIVER			0x0000000800000000ULL
 #define TEMPERATURE_CONTROL                 0x0000001000000000ULL
 #define AUTO_COMP_DISABLE                   0x0000002000000000ULL
+#define CONFIG_FILE                         0x0000004000000000ULL
 //											0x000000FFFFFFFFFFULL
 
 
@@ -289,6 +291,8 @@ public:
         if(slsErrorMask&AUTO_COMP_DISABLE)
                 retval.append("Could not set/get auto comparator disable\n");
 
+        if(slsErrorMask&CONFIG_FILE)
+                retval.append("Could not load/write config file\n");
 
 		//------------------------------------------------------ length of message
 
diff --git a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
index 1a2d1e21f..ae16c2a31 100644
--- a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
+++ b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
@@ -5149,6 +5149,7 @@ int multiSlsDetector::readConfigurationFile(string const fname){
 
   } else {
     std::cout<< "Error opening configuration file " << fname << " for reading" << std::endl;
+    setErrorMask(getErrorMask()|MULTI_CONFIG_FILE_ERROR);
     return FAIL;
   }
 #ifdef VERBOSE
@@ -5255,6 +5256,7 @@ int multiSlsDetector::writeConfigurationFile(string const fname){
 #endif
 	}  else {
 		std::cout<< "Error opening configuration file " << fname << " for writing" << std::endl;
+		setErrorMask(getErrorMask()|MULTI_CONFIG_FILE_ERROR);
 		ret = FAIL;
 	}
 
@@ -6510,6 +6512,10 @@ string multiSlsDetector::getErrorMessage(int &critical){
 					 "Please check the console\n");
 			 critical = 0;
 		 }
+		 if(multiMask & MULTI_CONFIG_FILE_ERROR) {
+		     retval.append("Could not load Config File\n");
+		     critical = 0;
+		 }
 
 		  for (int idet=0; idet<thisMultiDetector->numberOfDetectors; ++idet) {
 		    if (detectors[idet]) {
diff --git a/slsDetectorSoftware/slsDetector/slsDetector.cpp b/slsDetectorSoftware/slsDetector/slsDetector.cpp
index 89d80025d..d2fe36d9c 100644
--- a/slsDetectorSoftware/slsDetector/slsDetector.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetector.cpp
@@ -7265,6 +7265,7 @@ int slsDetector::readConfigurationFile(string const fname){
     infile.close();
   } else {
     std::cout<< "Error opening configuration file " << fname << " for reading" << std::endl;
+    setErrorMask((getErrorMask())|(CONFIG_FILE));
     return FAIL;
   }
 #ifdef VERBOSE
@@ -7362,6 +7363,7 @@ int slsDetector::writeConfigurationFile(string const fname){
   }
   else {
     std::cout<< "Error opening configuration file " << fname << " for writing" << std::endl;
+    setErrorMask((getErrorMask())|(CONFIG_FILE));
     return FAIL;
   }
 #ifdef VERBOSE