diff --git a/src/classes/CMakeLists.txt b/src/classes/CMakeLists.txt
index f8cf72aca..a5a187ca5 100644
--- a/src/classes/CMakeLists.txt
+++ b/src/classes/CMakeLists.txt
@@ -153,11 +153,14 @@ set_target_properties(PRgeHandler
 
 #--- make sure that the include directory is found ----------------------------
 target_include_directories(
-  PUserFcnBase BEFORE PRIVATE $<BUILD_INTERFACE:${MUSRFIT_INC}>
+  PUserFcnBase BEFORE PRIVATE 
+    $<BUILD_INTERFACE:${MUSRFIT_INC}>
 )
 
 target_include_directories(
-  PRgeHandler BEFORE PRIVATE $<BUILD_INTERFACE:${MUSRFIT_INC}>
+  PRgeHandler BEFORE PRIVATE 
+    $<BUILD_INTERFACE:${Boost_INCLUDE_DIR}>
+    $<BUILD_INTERFACE:${MUSRFIT_INC}>
 )
 
 #--- add ROOT Version >= 6.24 compile options if needed -----------------------
diff --git a/src/classes/PMsr2Data.cpp b/src/classes/PMsr2Data.cpp
index 24c9110c5..f9bbd1775 100644
--- a/src/classes/PMsr2Data.cpp
+++ b/src/classes/PMsr2Data.cpp
@@ -1308,7 +1308,9 @@ bool PMsr2Data::PrepareGlobalInputFile(unsigned int tempRun, const std::string &
       std::ostringstream oss;
       oss << path << "musrfit" << " " << *fRunVectorIter << "-OneRunFit" << fFileExtension << ".msr";
       std::cout << std::endl << ">> msr2data: **INFO** Calling " << oss.str() << std::endl;
-      system(oss.str().c_str());
+      if (system(oss.str().c_str()) == -1) {
+        std::cerr << std::endl << "**ERROR** system call: " << oss.str().c_str() << " failed." << std::endl;
+      }
 
       ++fRunVectorIter;
     }
diff --git a/src/classes/PMsrHandler.cpp b/src/classes/PMsrHandler.cpp
index 4f246f610..f4b8e2349 100644
--- a/src/classes/PMsrHandler.cpp
+++ b/src/classes/PMsrHandler.cpp
@@ -6728,9 +6728,9 @@ TString PMsrHandler::BeautifyFourierPhaseParameterString()
 
     if (phaseIter) {
       if (phaseRef != -1) {
-        str = TString::Format("parR(%d, %d, %d)", fFourier.fPhaseParamNo[0], offset, fFourier.fPhaseParamNo.size());
+        str = TString::Format("parR(%d, %d, %lu)", fFourier.fPhaseParamNo[0], offset, fFourier.fPhaseParamNo.size());
       } else {
-        str = TString::Format("par(%d, %d, %d)", fFourier.fPhaseParamNo[0], offset, fFourier.fPhaseParamNo.size());
+        str = TString::Format("par(%d, %d, %lu)", fFourier.fPhaseParamNo[0], offset, fFourier.fPhaseParamNo.size());
       }
     } else {
       str = TString("");
diff --git a/src/classes/PRunDataHandler.cpp b/src/classes/PRunDataHandler.cpp
index c0503e0f8..4ef8c6bc9 100644
--- a/src/classes/PRunDataHandler.cpp
+++ b/src/classes/PRunDataHandler.cpp
@@ -724,7 +724,9 @@ Bool_t PRunDataHandler::ReadWriteFilesList()
         sprintf(cmd, "tar -zcf %s %s", fln.Data(), fAny2ManyInfo->outPathFileName[0].Data());
       else // bzip2
         sprintf(cmd, "tar -jcf %s %s", fln.Data(), fAny2ManyInfo->outPathFileName[0].Data());
-      system(cmd);
+      if (system(cmd) == -1) {
+        std::cerr << "**ERROR** cmd: " << cmd << " failed." << std::endl;
+      }
     } else {
       fln += TString(".tar");
       for (UInt_t i=0; i<fAny2ManyInfo->outPathFileName.size(); i++) {
@@ -733,7 +735,9 @@ Bool_t PRunDataHandler::ReadWriteFilesList()
         } else {
           sprintf(cmd, "tar -rf %s %s", fln.Data(), fAny2ManyInfo->outPathFileName[i].Data());
         }
-        system(cmd);
+        if (system(cmd) == -1) {
+          std::cerr << "**ERROR** cmd: " << cmd << " failed." << std::endl;
+        }
       }
       if (fAny2ManyInfo->compressionTag == 1) { // gzip
         sprintf(cmd, "gzip %s", fln.Data());
@@ -742,7 +746,9 @@ Bool_t PRunDataHandler::ReadWriteFilesList()
         sprintf(cmd, "bzip2 -z %s", fln.Data());
         fln += ".bz2";
       }
-      system(cmd);
+      if (system(cmd) == -1) {
+        std::cerr << "**ERROR** cmd: " << cmd << " failed." << std::endl;
+      }
     }
 
     // check if the compressed file shall be streamed to the stdout
diff --git a/src/external/nexus/PNeXus.cpp b/src/external/nexus/PNeXus.cpp
index 085dff34f..9e1e6dcfc 100644
--- a/src/external/nexus/PNeXus.cpp
+++ b/src/external/nexus/PNeXus.cpp
@@ -2761,7 +2761,7 @@ int PNeXus::ReadFileIdf1()
   char cstr[128];
   int ival;
   float fval;
-  int attlen, atttype;
+  int attlen, atttype, rank, dims[32];
   NXname data_value, nxAttrName;
 
   // open file
@@ -2775,7 +2775,7 @@ int PNeXus::ReadFileIdf1()
 
   // collect the NXroot attribute information
   do {
-    status = NXgetnextattr(fFileHandle, nxAttrName, &attlen, &atttype);
+    status = NXgetnextattra(fFileHandle, nxAttrName, &rank, dims, &atttype);
     if (status == NX_OK) {
       if (!strcmp(nxAttrName, "HDF_version")) {
         attlen = VGNAMELENMAX - 1;
@@ -3153,7 +3153,7 @@ int PNeXus::ReadFileIdf1()
   // get data
 
   // get information of the current nexus entity
-  int rank, type, dims[32], size, noOfElements;
+  int type, size, noOfElements;
   if (!ErrorHandler(NXgetinfo(fFileHandle, &rank, dims, &type), PNEXUS_GET_META_INFO_ERROR, "couldn't get data info!")) return NX_ERROR;
 
   // calculate the needed size
@@ -3354,7 +3354,7 @@ int PNeXus::ReadFileIdf2()
 
   // collect the NXroot attribute information
   do {
-    status = NXgetnextattr(fFileHandle, nxAttrName, &attlen, &atttype);
+    status = NXgetnextattra(fFileHandle, nxAttrName, &rank, dims, &atttype);
     if (status == NX_OK) {
       if (!strcmp(nxAttrName, "HDF_version")) {
         attlen = VGNAMELENMAX - 1;
@@ -5432,21 +5432,23 @@ bool PNeXus::SearchInGroup(std::string str, std::string tag, NXname &nxname, NXn
  * - false otherwise
  *
  * \param str label of the attribute to be looked for
- * \param length of the attribute data it entry is found
+ * \param length of the attribute data if entry is found
  * \param dataType of the entry if entry is found
  */
 bool PNeXus::SearchAttrInData(std::string str, int &length, int &dataType)
 {
   bool found = false;
-  int status;
+  int status, rank, dims[32];
   char name[128];
 
   memset(name, 0, sizeof(name));
 
   NXinitattrdir(fFileHandle);
   do {
-    status = NXgetnextattr(fFileHandle, name, &length, &dataType);
+    status = NXgetnextattra(fFileHandle, name, &rank, dims, &dataType);
     if (!str.compare(name)) {
+      if (rank == 1)
+        length = dims[0];
       found = true;
       break;
     }
diff --git a/src/msr2data.cpp b/src/msr2data.cpp
index 0fb7a6210..e61e6eb6b 100644
--- a/src/msr2data.cpp
+++ b/src/msr2data.cpp
@@ -893,7 +893,9 @@ int main(int argc, char *argv[])
         std::ostringstream oss;
         oss << path << "musrfit" << " " << strInfile.str() << " " << musrfitOptions;
         std::cout << std::endl << ">> msr2data: **INFO** Calling " << oss.str() << std::endl;
-        system(oss.str().c_str());
+        if (system(oss.str().c_str()) == -1) {
+          std::cerr << "**ERROR** cmd: " << oss.str().c_str() << " failed." << std::endl;
+        }
       }
     }
 
@@ -982,7 +984,9 @@ int main(int argc, char *argv[])
           std::ostringstream oss;
           oss << path << "musrfit" << " " << strInfile.str() << " " << musrfitOptions;
           std::cout << std::endl << ">> msr2data: **INFO** Calling " << oss.str() << std::endl;
-          system(oss.str().c_str());
+          if (system(oss.str().c_str()) == -1) {
+            std::cerr << "**ERROR** cmd: " << oss.str().c_str() << " failed." << std::endl;
+          }
         }
       }
 
diff --git a/src/msr2msr.cpp b/src/msr2msr.cpp
index 03ef1c494..99b5ef023 100644
--- a/src/msr2msr.cpp
+++ b/src/msr2msr.cpp
@@ -574,10 +574,16 @@ bool msr2msr_finalize_theory(char *fln, int theoryTag, int noOfAddionalParams)
 
   // cp __temp.msr fln
   sprintf(str, "cp __temp.msr %s", fln);
-  system(str);
+  if (system(str) == -1) {
+    std::cerr << "**ERROR** cmd: " << str << " failed." << std::endl;
+    return false;
+  }
   // rm __temp.msr
   strcpy(str, "rm __temp.msr");
-  system(str);
+  if (system(str) == -1) {
+    std::cerr << "**ERROR** cmd: " << str << " failed." << std::endl;
+    return false;
+  }
 
   return true;
 }
@@ -704,7 +710,10 @@ int main(int argc, char *argv[])
   // check if conversion seems to be OK
   if (!success) {
     sprintf(str, "rm -rf %s", argv[2]);
-    system(str);
+    if (system(str) == -1) {
+      std::cerr << "**ERROR** cmd: " << str << " failed." << std::endl;
+      return 0;
+    }
   }
 
   if (theoryTag != -1) {
diff --git a/src/musredit_qt5/musredit/PDumpOutputHandler.cpp b/src/musredit_qt5/musredit/PDumpOutputHandler.cpp
index 5e3103334..29c90648a 100644
--- a/src/musredit_qt5/musredit/PDumpOutputHandler.cpp
+++ b/src/musredit_qt5/musredit/PDumpOutputHandler.cpp
@@ -123,7 +123,14 @@ PDumpOutputHandler::~PDumpOutputHandler()
 #else
     qDebug() << msg << Qt::endl;
 #endif
-    system(cmd.toLatin1());
+    if (system(cmd.toLatin1()) == -1) {
+#if (QT_VERSION < QT_VERSION_CHECK(5, 14, 0))
+      qDebug() << "**ERROR** " << msg << " failed." << endl;
+#else
+      qDebug() << "**ERROR** " << msg << " failed." << Qt::endl;
+#endif
+
+    }
   }
   if (fProc) {
     delete fProc;
diff --git a/src/musredit_qt5/musredit/PFitOutputHandler.cpp b/src/musredit_qt5/musredit/PFitOutputHandler.cpp
index bdfe737e0..d31bd8ccb 100644
--- a/src/musredit_qt5/musredit/PFitOutputHandler.cpp
+++ b/src/musredit_qt5/musredit/PFitOutputHandler.cpp
@@ -126,7 +126,13 @@ PFitOutputHandler::~PFitOutputHandler()
 #else
     qDebug() << msg << Qt::endl;
 #endif
-    system(cmd.toLatin1());
+    if (system(cmd.toLatin1()) == -1) {
+#if (QT_VERSION < QT_VERSION_CHECK(5, 14, 0))
+      qDebug() << "**ERROR** " << msg << " - failed!" << endl;
+#else
+      qDebug() << "**ERROR** " << msg << " - failed!" << Qt::endl;
+#endif
+    }
   }
   if (fProc) {
     delete fProc;