diff --git a/Software/PC_Application/CustomWidgets/informationbox.cpp b/Software/PC_Application/CustomWidgets/informationbox.cpp
index 993c7a7..71af4a3 100644
--- a/Software/PC_Application/CustomWidgets/informationbox.cpp
+++ b/Software/PC_Application/CustomWidgets/informationbox.cpp
@@ -15,11 +15,17 @@ void InformationBox::ShowMessage(QString title, QString message, QString message
 
     QSettings s;
     if(!s.contains(hashToSettingsKey(hash))) {
-        auto box = new InformationBox(title, message, hash, nullptr);
+        auto box = new InformationBox(title, message, QMessageBox::Information, hash, nullptr);
         box->show();
     }
 }
 
+void InformationBox::ShowError(QString title, QString message)
+{
+    auto box = new InformationBox(title, message, QMessageBox::Information, 0, nullptr);
+    box->show();
+}
+
 bool InformationBox::AskQuestion(QString title, QString question, bool defaultAnswer, QString messageID)
 {
     // check if the user still wants to see this message
@@ -32,7 +38,7 @@ bool InformationBox::AskQuestion(QString title, QString question, bool defaultAn
 
     QSettings s;
     if(!s.contains(hashToSettingsKey(hash))) {
-        auto box = new InformationBox(title, question, hash, nullptr);
+        auto box = new InformationBox(title, question, QMessageBox::Question, hash, nullptr);
         box->setStandardButtons(QMessageBox::Yes | QMessageBox::No);
         int ret = box->exec();
         if(ret == QMessageBox::Yes) {
@@ -46,17 +52,21 @@ bool InformationBox::AskQuestion(QString title, QString question, bool defaultAn
     }
 }
 
-InformationBox::InformationBox(QString title, QString message, unsigned int hash, QWidget *parent)
+InformationBox::InformationBox(QString title, QString message, Icon icon, unsigned int hash, QWidget *parent)
     : QMessageBox(parent),
       hash(hash)
 {
     setWindowTitle(title);
     setText(message);
     setAttribute(Qt::WA_DeleteOnClose, true);
-    setIcon(QMessageBox::Information);
+    setIcon(icon);
 
     auto cb = new QCheckBox("Do not show this message again");
     setCheckBox(cb);
+
+    if(hash == 0) {
+        cb->setVisible(false);
+    }
 }
 
 InformationBox::~InformationBox()
diff --git a/Software/PC_Application/CustomWidgets/informationbox.h b/Software/PC_Application/CustomWidgets/informationbox.h
index 45f897f..1352f99 100644
--- a/Software/PC_Application/CustomWidgets/informationbox.h
+++ b/Software/PC_Application/CustomWidgets/informationbox.h
@@ -8,10 +8,11 @@ class InformationBox : public QMessageBox
     Q_OBJECT
 public:
     static void ShowMessage(QString title, QString message, QString messageID = QString());
+    static void ShowError(QString title, QString message);
     // Display a dialog with yes/no buttons. Returns true if yes is clicked, false otherwise. If the user has selected to never see this message again, defaultAnswer is returned instead
     static bool AskQuestion(QString title, QString question, bool defaultAnswer, QString messageID = QString());
 private:
-    InformationBox(QString title, QString message, unsigned int hash, QWidget *parent);
+    InformationBox(QString title, QString message, QMessageBox::Icon icon, unsigned int hash, QWidget *parent);
     ~InformationBox();
     static QString hashToSettingsKey(unsigned int hash);
     unsigned int hash;
diff --git a/Software/PC_Application/SpectrumAnalyzer/tracewidgetsa.cpp b/Software/PC_Application/SpectrumAnalyzer/tracewidgetsa.cpp
index c1835a3..7c90b01 100644
--- a/Software/PC_Application/SpectrumAnalyzer/tracewidgetsa.cpp
+++ b/Software/PC_Application/SpectrumAnalyzer/tracewidgetsa.cpp
@@ -2,6 +2,7 @@
 #include "Traces/tracecsvexport.h"
 #include <QFileDialog>
 #include "Traces/traceimportdialog.h"
+#include "CustomWidgets/informationbox.h"
 
 TraceWidgetSA::TraceWidgetSA(TraceModel &model, QWidget *parent)
     : TraceWidget(model, parent)
@@ -19,21 +20,25 @@ void TraceWidgetSA::importDialog()
 {
     auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "CSV files (*.csv)", nullptr, QFileDialog::DontUseNativeDialog);
     if (!filename.isEmpty()) {
-        std::vector<Trace*> traces;
-        QString prefix = QString();
-        auto csv = CSV::fromFile(filename);
-        traces = Trace::createFromCSV(csv);
-        // contruct prefix from filename
-        prefix = filename;
-        // remove any directory names (keep only the filename itself)
-        int lastSlash = qMax(prefix.lastIndexOf('/'), prefix.lastIndexOf('\\'));
-        if(lastSlash != -1) {
-            prefix.remove(0, lastSlash + 1);
+        try {
+            std::vector<Trace*> traces;
+            QString prefix = QString();
+            auto csv = CSV::fromFile(filename);
+            traces = Trace::createFromCSV(csv);
+            // contruct prefix from filename
+            prefix = filename;
+            // remove any directory names (keep only the filename itself)
+            int lastSlash = qMax(prefix.lastIndexOf('/'), prefix.lastIndexOf('\\'));
+            if(lastSlash != -1) {
+                prefix.remove(0, lastSlash + 1);
+            }
+            // remove file type
+            prefix.truncate(prefix.indexOf('.'));
+            prefix.append("_");
+            auto i = new TraceImportDialog(model, traces, prefix);
+            i->show();
+        } catch(const std::exception e) {
+            InformationBox::ShowError("Failed to import file", QString("Attempt to import file ended with error: \"") + e.what()+"\"");
         }
-        // remove file type
-        prefix.truncate(prefix.indexOf('.'));
-        prefix.append("_");
-        auto i = new TraceImportDialog(model, traces, prefix);
-        i->show();
     }
 }
diff --git a/Software/PC_Application/VNA/tracewidgetvna.cpp b/Software/PC_Application/VNA/tracewidgetvna.cpp
index 8eac4a7..928d14d 100644
--- a/Software/PC_Application/VNA/tracewidgetvna.cpp
+++ b/Software/PC_Application/VNA/tracewidgetvna.cpp
@@ -6,6 +6,7 @@
 #include "Traces/tracecsvexport.h"
 #include "ui_tracewidget.h"
 #include "ui_s2pImportOptions.h"
+#include "CustomWidgets/informationbox.h"
 
 #include <QMenu>
 
@@ -47,60 +48,64 @@ void TraceWidgetVNA::importDialog()
 {
     auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p);;CSV files (*.csv)", nullptr, QFileDialog::DontUseNativeDialog);
     if (!filename.isEmpty()) {
-        std::vector<Trace*> traces;
-        QString prefix = QString();
-        if(filename.endsWith(".csv")) {
-            auto csv = CSV::fromFile(filename);
-            traces = Trace::createFromCSV(csv);
-        } else {
-            // must be a touchstone file
-            auto t = Touchstone::fromFile(filename.toStdString());
-            traces = Trace::createFromTouchstone(t);
-        }
-        // contruct prefix from filename
-        prefix = filename;
-        // remove any directory names (keep only the filename itself)
-        int lastSlash = qMax(prefix.lastIndexOf('/'), prefix.lastIndexOf('\\'));
-        if(lastSlash != -1) {
-            prefix.remove(0, lastSlash + 1);
-        }
-        // remove file type
-        prefix.truncate(prefix.indexOf('.'));
-        prefix.append("_");
-        auto i = new TraceImportDialog(model, traces, prefix);
-        i->show();
-        if(filename.endsWith(".s2p")) {
-            // potential candidate to process via calibration/de-embedding
-            connect(i, &TraceImportDialog::importFinsished, [=](const std::vector<Trace*> &traces) {
-                if(traces.size() == 4) {
-                    // all traces imported, can calculate calibration/de-embedding
-                    bool calAvailable = cal.nPoints() > 0;
-                    bool deembedAvailable = deembed.getOptions().size() > 0;
-                    if(calAvailable || deembedAvailable) {
-                        // check if user wants to apply either one to the imported traces
-                        auto dialog = new QDialog();
-                        auto ui = new Ui::s2pImportOptions;
-                        ui->setupUi(dialog);
-                        ui->applyCal->setEnabled(calAvailable);
-                        ui->deembed->setEnabled(deembedAvailable);
-                        bool applyCal = false;
-                        bool applyDeembed = false;
-                        connect(ui->applyCal, &QCheckBox::toggled, [&](bool checked) {
-                            applyCal = checked;
-                        });
-                        connect(ui->deembed, &QCheckBox::toggled, [&](bool checked) {
-                            applyDeembed = checked;
-                        });
-                        dialog->exec();
-                        if(applyCal) {
-                            cal.correctTraces(*traces[0], *traces[1], *traces[2], *traces[3]);
-                        }
-                        if(applyDeembed) {
-                            deembed.Deembed(*traces[0], *traces[1], *traces[2], *traces[3]);
+        try {
+            std::vector<Trace*> traces;
+            QString prefix = QString();
+            if(filename.endsWith(".csv")) {
+                auto csv = CSV::fromFile(filename);
+                traces = Trace::createFromCSV(csv);
+            } else {
+                // must be a touchstone file
+                auto t = Touchstone::fromFile(filename.toStdString());
+                traces = Trace::createFromTouchstone(t);
+            }
+            // contruct prefix from filename
+            prefix = filename;
+            // remove any directory names (keep only the filename itself)
+            int lastSlash = qMax(prefix.lastIndexOf('/'), prefix.lastIndexOf('\\'));
+            if(lastSlash != -1) {
+                prefix.remove(0, lastSlash + 1);
+            }
+            // remove file type
+            prefix.truncate(prefix.indexOf('.'));
+            prefix.append("_");
+            auto i = new TraceImportDialog(model, traces, prefix);
+            i->show();
+            if(filename.endsWith(".s2p")) {
+                // potential candidate to process via calibration/de-embedding
+                connect(i, &TraceImportDialog::importFinsished, [=](const std::vector<Trace*> &traces) {
+                    if(traces.size() == 4) {
+                        // all traces imported, can calculate calibration/de-embedding
+                        bool calAvailable = cal.nPoints() > 0;
+                        bool deembedAvailable = deembed.getOptions().size() > 0;
+                        if(calAvailable || deembedAvailable) {
+                            // check if user wants to apply either one to the imported traces
+                            auto dialog = new QDialog();
+                            auto ui = new Ui::s2pImportOptions;
+                            ui->setupUi(dialog);
+                            ui->applyCal->setEnabled(calAvailable);
+                            ui->deembed->setEnabled(deembedAvailable);
+                            bool applyCal = false;
+                            bool applyDeembed = false;
+                            connect(ui->applyCal, &QCheckBox::toggled, [&](bool checked) {
+                                applyCal = checked;
+                            });
+                            connect(ui->deembed, &QCheckBox::toggled, [&](bool checked) {
+                                applyDeembed = checked;
+                            });
+                            dialog->exec();
+                            if(applyCal) {
+                                cal.correctTraces(*traces[0], *traces[1], *traces[2], *traces[3]);
+                            }
+                            if(applyDeembed) {
+                                deembed.Deembed(*traces[0], *traces[1], *traces[2], *traces[3]);
+                            }
                         }
                     }
-                }
-            });
+                });
+            }
+        } catch(const std::exception& e) {
+            InformationBox::ShowError("Failed to import file", QString("Attempt to import file ended with error: \"") + e.what()+"\"");
         }
     }
 }