diff --git a/FEM/OpenSeesPyFEM.cpp b/FEM/OpenSeesPyFEM.cpp
index 530eeb50..0a6f65c0 100644
--- a/FEM/OpenSeesPyFEM.cpp
+++ b/FEM/OpenSeesPyFEM.cpp
@@ -218,7 +218,7 @@ OpenSeesPyFEM::outputAppDataToJSON(QJsonObject &jsonObject) {
 
     if (fileInfo2.exists() && fileInfo2.isFile()) {
         dataObj["parametersScript"]=fileInfo2.fileName();
-        dataObj["PS_Path"]=fileInfo1.path();
+        dataObj["PA_Path"]=fileInfo2.path();
     } else {
         if (fileName2.isEmpty())
             dataObj["parametersScript"]=QString("");
@@ -253,6 +253,8 @@ OpenSeesPyFEM::inputAppDataFromJSON(QJsonObject &jsonObject) {
     QString fileName;
     QString filePath;
     
+    // Main ==
+
     if (dataObject.contains("mainScript")) {
       QJsonValue theName = dataObject["mainScript"];
       fileName = theName.toString();
@@ -267,31 +269,39 @@ OpenSeesPyFEM::inputAppDataFromJSON(QJsonObject &jsonObject) {
     
     inputScript->setText(QDir(filePath).filePath(fileName));
 
+    // Post ==
+
     if (dataObject.contains("postprocessScript")) {
       QJsonValue theName = dataObject["postprocessScript"];
       fileName = theName.toString();
       
       if (dataObject.contains("PS_Path")) {
-	QJsonValue theName = dataObject["PS_Path"];
-	filePath = theName.toString();
-	postprocessScript->setText(QDir(filePath).filePath(fileName));	
-      } else 
-	postprocessScript->setText(fileName);	
-    } else
+        QJsonValue theName = dataObject["PS_Path"];
+        filePath = theName.toString();
+        postprocessScript->setText(QDir(filePath).filePath(fileName));
+      } else {
+        postprocessScript->setText(fileName);
+      }
+    } else  {
       postprocessScript->setText("");
+    }
+
+    // Params ==
 
     if (dataObject.contains("parametersScript")) {
       QJsonValue theName = dataObject["parametersScript"];
       fileName = theName.toString();
-      
+
       if (dataObject.contains("PA_Path")) {
-	QJsonValue theName = dataObject["PA_Path"];
-	filePath = theName.toString();
-	parametersScript->setText(QDir(filePath).filePath(fileName));
-      } else
-	parametersScript->setText(fileName);
-    } else 
-      parametersScript->setText("");
+        QJsonValue theName = dataObject["PA_Path"];
+        filePath = theName.toString();
+        parametersScript->setText(QDir(filePath).filePath(fileName));
+      } else {
+        parametersScript->setText(fileName);
+      }
+    } else  {
+        parametersScript->setText("");
+    }
 
   } else
     return false;
diff --git a/FEM/surrogateGpFEM.cpp b/FEM/surrogateGpFEM.cpp
index fd722594..bea0ff18 100644
--- a/FEM/surrogateGpFEM.cpp
+++ b/FEM/surrogateGpFEM.cpp
@@ -87,7 +87,7 @@ surrogateGpFEM::surrogateGpFEM(QWidget *parent)
 
     QLabel *label2 = new QLabel("SurrogateGP Model (.pkl)");
     postprocessScript = new QLineEdit;
-    postprocessScript->setPlaceholderText("(Optional)");
+    postprocessScript->setPlaceholderText("");
     QPushButton *choosePostprocessScript = new QPushButton();
     choosePostprocessScript->setText(tr("Choose"));
     connect(choosePostprocessScript, &QPushButton::clicked, this, [this](){
@@ -134,8 +134,10 @@ surrogateGpFEM::surrogateGpFEM(QWidget *parent)
     QHBoxLayout * gpOutputLayout = new QHBoxLayout();
     gpOutputComboBox= new QComboBox;
     gpOutputComboBox->addItem("Median (representative) prediction");
+    //gpOutputComboBox->addItem("Random sample under prediction uncertainty");
     gpOutputLayout->addWidget( new QLabel("GP output   "));
     gpOutputLayout->addWidget(gpOutputComboBox);
+    gpOutputComboBox->setMinimumWidth(400);
     gpOutputLayout->addStretch(1);
 
     connect(option3Button, &QRadioButton::toggled, this, [=](bool tog){
@@ -398,6 +400,8 @@ surrogateGpFEM::showGpOptions(QString name1) {
     if (file.open(QFile::ReadOnly | QFile::Text)) {
         QString val;
         val=file.readAll();
+        val.replace(QString("NaN"),QString("null"));
+        val.replace(QString("Infinity"),QString("inf"));
         QJsonDocument doc = QJsonDocument::fromJson(val.toUtf8());
         QJsonObject jsonSur = doc.object();
         file.close();
diff --git a/FEM/surrogateGpParser.cpp b/FEM/surrogateGpParser.cpp
index 623d95e3..5baa55b6 100644
--- a/FEM/surrogateGpParser.cpp
+++ b/FEM/surrogateGpParser.cpp
@@ -76,9 +76,13 @@ surrogateGpParser::getVariables(QString inFilename)
     if (file.open(QFile::ReadOnly | QFile::Text)) {
         QString val;
         val=file.readAll();
+        file.close();
+        val.replace(QString("NaN"),QString("null"));
+        val.replace(QString("Infinity"),QString("inf"));
+
         QJsonDocument doc = QJsonDocument::fromJson(val.toUtf8());
         QJsonObject jsonSur = doc.object();
-        file.close();
+
 
         auto GPidentifier = jsonSur.find("kernName"); // should be the right .json file
         if (!jsonSur.isEmpty() && GPidentifier != jsonSur.end()) {