diff --git a/src/UESaveFile/UESaveFile.cpp b/src/UESaveFile/UESaveFile.cpp
index dd87b35..16e6310 100644
--- a/src/UESaveFile/UESaveFile.cpp
+++ b/src/UESaveFile/UESaveFile.cpp
@@ -61,6 +61,7 @@ auto UESaveFile::saveToFile() -> bool {
     BinaryWriter writer{_filepath + ".tmp"};
 
     if(!writer.open()) {
+        _lastError = "Couldn't open the file for saving.";
         return false;
     }
 
@@ -73,12 +74,14 @@ auto UESaveFile::saveToFile() -> bool {
        !writer.writeUnsignedInt(_engineVersion.build)   ||
        !writer.writeUEString(_engineVersion.buildId))
     {
+        _lastError = "Couldn't write the header.";
         return false;
     }
 
     if(!writer.writeUnsignedInt(_customFormatVersion) ||
        !writer.writeUnsignedInt(_customFormatData.size()))
     {
+        _lastError = "Couldn't write the header.";
         return false;
     }
 
@@ -86,21 +89,25 @@ auto UESaveFile::saveToFile() -> bool {
         if(!writer.writeStaticArray(Containers::StaticArrayView<16, const char>{_customFormatData[i].id}) ||
            !writer.writeUnsignedInt(_customFormatData[i].value))
         {
+            _lastError = "Couldn't write the header.";
             return false;
         }
     }
 
     if(!writer.writeUEString(_saveType)) {
+        _lastError = "Couldn't write the header.";
         return false;
     }
 
     for(auto& prop : _properties) {
         UnsignedLong bytes_written = 0;
         if(!_propSerialiser.write(prop, bytes_written, writer)) {
+            _lastError = "Couldn't write the property " + *prop->name + " to the array.";
             return false;
         }
 
         if(!writer.flushToFile()) {
+            _lastError = "Couldn't write the property " + *prop->name + " to the file.";
             return false;
         }
     }