diff --git a/ApplicationLibCode/Commands/ExportCommands/RicExportInpFileFeature.cpp b/ApplicationLibCode/Commands/ExportCommands/RicExportInpFileFeature.cpp
index 378d678283..87de3e2f42 100644
--- a/ApplicationLibCode/Commands/ExportCommands/RicExportInpFileFeature.cpp
+++ b/ApplicationLibCode/Commands/ExportCommands/RicExportInpFileFeature.cpp
@@ -27,6 +27,7 @@
 
 #include <QAction>
 #include <QFile>
+#include <QMessageBox>
 #include <QString>
 
 CAF_CMD_SOURCE_INIT( RicExportInpFileFeature, "RicExportInpFileFeature" );
@@ -47,8 +48,16 @@ void RicExportInpFileFeature::onActionTriggered( bool isChecked )
     auto faultReactivationModel = caf::SelectionManager::instance()->selectedItemOfType<RimFaultReactivationModel>();
     if ( faultReactivationModel )
     {
-        QString exportFile = faultReactivationModel->baseDir() + "/faultreactivation.inp";
-        RifFaultReactivationModelExporter::exportToFile( exportFile.toStdString(), *faultReactivationModel );
+        QString exportFile        = faultReactivationModel->baseDir() + "/faultreactivation.inp";
+        auto [isOk, errorMessage] = RifFaultReactivationModelExporter::exportToFile( exportFile.toStdString(), *faultReactivationModel );
+        if ( !isOk )
+        {
+            const QString frmTitle( "Fault Reactivation Modeling" );
+
+            QString outErrorText =
+                QString( "Failed to export INP model to file %1.\n\n%2" ).arg( exportFile ).arg( QString::fromStdString( errorMessage ) );
+            QMessageBox::critical( nullptr, frmTitle, outErrorText );
+        }
     }
 }
 
diff --git a/ApplicationLibCode/FileInterface/RifFaultReactivationModelExporter.cpp b/ApplicationLibCode/FileInterface/RifFaultReactivationModelExporter.cpp
index 4bcfc132db..e5ca9b025c 100644
--- a/ApplicationLibCode/FileInterface/RifFaultReactivationModelExporter.cpp
+++ b/ApplicationLibCode/FileInterface/RifFaultReactivationModelExporter.cpp
@@ -66,17 +66,25 @@ std::pair<bool, std::string> RifFaultReactivationModelExporter::exportToStream(
 
     auto model = rimModel.model();
     CAF_ASSERT( !model.isNull() );
-    printHeading( stream, applicationNameAndVersion );
-    printParts( stream, *model, partNames, borders, faces, boundaries, rimModel.localCoordSysNormalsXY() );
-    printAssembly( stream, *model, partNames );
-    printMaterials( stream );
-    printInteractionProperties( stream, faultFriction );
-    printBoundaryConditions( stream, *model, partNames, boundaries );
-    printPredefinedFields( stream, partNames );
-    printInteractions( stream, partNames, borders );
-    printSteps( stream, partNames );
-
-    // TODO: improve error handling
+
+    std::vector<std::function<std::pair<bool, std::string>()>> methods = {
+        [&]() { return printHeading( stream, applicationNameAndVersion ); },
+        [&]() { return printParts( stream, *model, partNames, borders, faces, boundaries, rimModel.localCoordSysNormalsXY() ); },
+        [&]() { return printAssembly( stream, *model, partNames ); },
+        [&]() { return printMaterials( stream ); },
+        [&]() { return printInteractionProperties( stream, faultFriction ); },
+        [&]() { return printBoundaryConditions( stream, *model, partNames, boundaries ); },
+        [&]() { return printPredefinedFields( stream, partNames ); },
+        [&]() { return printInteractions( stream, partNames, borders ); },
+        [&]() { return printSteps( stream, partNames ); },
+    };
+
+    for ( auto method : methods )
+    {
+        auto [isOk, errorMessage] = method();
+        if ( !isOk ) return { false, errorMessage };
+    }
+
     return { true, "" };
 }
 
@@ -184,6 +192,8 @@ std::pair<bool, std::string> RifFaultReactivationModelExporter::printParts(
 
         RifInpExportTools::printLine( stream, "," );
         RifInpExportTools::printHeading( stream, "End Part" );
+
+        if ( !stream.good() ) return { false, "Failed to write part " + partName + " to fault reactivation INP." };
     }
 
     return { true, "" };