diff --git a/src/openrct2/FileClassifier.cpp b/src/openrct2/FileClassifier.cpp
index 982d774084..b99e1c7061 100644
--- a/src/openrct2/FileClassifier.cpp
+++ b/src/openrct2/FileClassifier.cpp
@@ -95,57 +95,71 @@ static bool TryClassifyAsS6(IStream * stream, ClassifiedFileInfo * result)
 
 static bool TryClassifyAsS4(IStream * stream, ClassifiedFileInfo * result)
 {
+    bool success = false;
     uint64 originalPosition = stream->GetPosition();
-    size_t dataLength = (size_t)stream->GetLength();
-    uint8 * data = stream->ReadArray<uint8>(dataLength);
+    try
+    {
+        size_t dataLength = (size_t)stream->GetLength();
+        uint8 * data = stream->ReadArray<uint8>(dataLength);
+        stream->SetPosition(originalPosition);
+        sint32 fileTypeVersion = sawyercoding_detect_file_type(data, dataLength);
+        Memory::Free(data);
+
+        sint32 type = fileTypeVersion & FILE_TYPE_MASK;
+        sint32 version = fileTypeVersion & FILE_VERSION_MASK;
+
+        if (type == FILE_TYPE_SV4)
+        {
+            result->Type = FILE_TYPE::SAVED_GAME;
+            result->Version = version;
+            success = true;
+        }
+        else if (type == FILE_TYPE_SC4)
+        {
+            result->Type = FILE_TYPE::SCENARIO;
+            result->Version = version;
+            success = true;
+        }
+    }
+    catch (Exception)
+    {
+    }
+
     stream->SetPosition(originalPosition);
-    sint32 fileTypeVersion = sawyercoding_detect_file_type(data, dataLength);
-    Memory::Free(data);
-
-    sint32 type = fileTypeVersion & FILE_TYPE_MASK;
-    sint32 version = fileTypeVersion & FILE_VERSION_MASK;
-
-    if (type == FILE_TYPE_SV4)
-    {
-        result->Type = FILE_TYPE::SAVED_GAME;
-        result->Version = version;
-        return true;
-    }
-    else if (type == FILE_TYPE_SC4)
-    {
-        result->Type = FILE_TYPE::SCENARIO;
-        result->Version = version;
-        return true;
-    }
-
-    return false;
+    return success;
 }
 
 static bool TryClassifyAsTD4_TD6(IStream * stream, ClassifiedFileInfo * result)
 {
     bool success = false;
     uint64 originalPosition = stream->GetPosition();
-    size_t dataLength = (size_t)stream->GetLength();
-    uint8 * data = stream->ReadArray<uint8>(dataLength);
-    stream->SetPosition(originalPosition);
-
-    if (sawyercoding_validate_track_checksum(data, dataLength))
+    try
     {
-        uint8 * td6data = Memory::Allocate<uint8>(0x10000);
-        size_t td6len = sawyercoding_decode_td6(data, td6data, dataLength);
-        if (td6data != nullptr && td6len >= 8)
+        size_t dataLength = (size_t)stream->GetLength();
+        uint8 * data = stream->ReadArray<uint8>(dataLength);
+        stream->SetPosition(originalPosition);
+
+        if (sawyercoding_validate_track_checksum(data, dataLength))
         {
-            uint8 version = (td6data[7] >> 2) & 3;
-            if (version <= 2)
+            uint8 * td6data = Memory::Allocate<uint8>(0x10000);
+            size_t td6len = sawyercoding_decode_td6(data, td6data, dataLength);
+            if (td6data != nullptr && td6len >= 8)
             {
-                result->Type = FILE_TYPE::TRACK_DESIGN;
-                result->Version = version;
-                success = true;
+                uint8 version = (td6data[7] >> 2) & 3;
+                if (version <= 2)
+                {
+                    result->Type = FILE_TYPE::TRACK_DESIGN;
+                    result->Version = version;
+                    success = true;
+                }
             }
+            Memory::Free(td6data);
         }
-        Memory::Free(td6data);
+        Memory::Free(data);
+    }
+    catch (Exception)
+    {
     }
-    Memory::Free(data);
 
     return success;
 }