diff --git a/LightlessSync/Services/XivDataAnalyzer.cs b/LightlessSync/Services/XivDataAnalyzer.cs
index 6cd9cef..f3f7e9d 100644
--- a/LightlessSync/Services/XivDataAnalyzer.cs
+++ b/LightlessSync/Services/XivDataAnalyzer.cs
@@ -164,12 +164,25 @@ public sealed class XivDataAnalyzer
 
         var output = new Dictionary<string, List<ushort>>(StringComparer.OrdinalIgnoreCase);
 
-        var tempHavokDataPath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName()) + ".hkx";
-        var tempHavokDataPathAnsi = Marshal.StringToHGlobalAnsi(tempHavokDataPath);
+        // write to temp file
+        var tempHavokDataPath = Path.Combine(Path.GetTempPath(), $"lightless_{Guid.NewGuid():N}.hkx");
+        var tempHavokDataPathAnsi = IntPtr.Zero;
 
         try
         {
-            File.WriteAllBytes(tempHavokDataPath, havokData);
+            using (var tempFs = new FileStream(tempHavokDataPath, FileMode.CreateNew, FileAccess.Write, FileShare.None, 4096, FileOptions.DeleteOnClose))
+            {
+                tempFs.Write(havokData, 0, havokData.Length);
+                tempFs.Flush(true);
+            }
+
+            if (!File.Exists(tempHavokDataPath))
+            {
+                _logger.LogWarning("Temporary havok file was deleted before it could be loaded: {path}", tempHavokDataPath);
+                return null;
+            }
+
+            tempHavokDataPathAnsi = Marshal.StringToHGlobalAnsi(tempHavokDataPath);
 
             var loadoptions = stackalloc hkSerializeUtil.LoadOptions[1];
             loadoptions->TypeInfoRegistry = hkBuiltinTypeRegistry.Instance()->GetTypeInfoRegistry();
@@ -181,7 +194,10 @@ public sealed class XivDataAnalyzer
 
             var resource = hkSerializeUtil.LoadFromFile((byte*)tempHavokDataPathAnsi, null, loadoptions);
             if (resource == null)
-                throw new InvalidOperationException("Resource was null after loading");
+            {
+                _logger.LogWarning("Havok resource was null after loading from {path}", tempHavokDataPath);
+                return null;
+            }
 
             var rootLevelName = @"hkRootLevelContainer"u8;
             fixed (byte* n1 = rootLevelName)
@@ -229,8 +245,8 @@ public sealed class XivDataAnalyzer
             foreach (var key in output.Keys.ToList())
             {
                 output[key] = [.. output[key]
-                    .Distinct()
-                    .Order()];
+                .Distinct()
+                .Order()];
             }
         }
         catch (Exception ex)
@@ -240,8 +256,18 @@ public sealed class XivDataAnalyzer
         }
         finally
         {
-            Marshal.FreeHGlobal(tempHavokDataPathAnsi);
-            try { File.Delete(tempHavokDataPath); } catch { /* ignore */ }
+            if (tempHavokDataPathAnsi != IntPtr.Zero)
+                Marshal.FreeHGlobal(tempHavokDataPathAnsi);
+
+            try
+            {
+                if (File.Exists(tempHavokDataPath))
+                    File.Delete(tempHavokDataPath);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogTrace(ex, "Could not delete temporary havok file: {path}", tempHavokDataPath);
+            }
         }
 
         _configService.Current.BonesDictionary[hash] = output;