diff --git a/tests/Aetheria.Shared.Tests/FireControlTests.cs b/tests/Aetheria.Shared.Tests/FireControlTests.cs
index 0f95a2078..d4d0ba50d 100644
--- a/tests/Aetheria.Shared.Tests/FireControlTests.cs
+++ b/tests/Aetheria.Shared.Tests/FireControlTests.cs
@@ -82,7 +82,7 @@ public sealed class FireControlTests : IDisposable
             buildCache.FlushAsync().Wait();
         }
 
-        _openCache = AetheriaStores.Open(Catalog, catalogWritable: true);
+        _openCache = AetheriaStores.Open(Catalog, Path.Combine(_root, "Run.cc"), catalogWritable: true);
         var ledger = new ProvenanceLedger();
         ledger.Lots[1] = new Lot { Origin = new Attributed(), Quality = 1 }; // hull
         for (var i = 0; i < hardpoints.Length; i++)
diff --git a/tests/Aetheria.Shared.Tests/FloatingBodyTests.cs b/tests/Aetheria.Shared.Tests/FloatingBodyTests.cs
index b15e71fb0..e4ee47cfe 100644
--- a/tests/Aetheria.Shared.Tests/FloatingBodyTests.cs
+++ b/tests/Aetheria.Shared.Tests/FloatingBodyTests.cs
@@ -217,7 +217,7 @@ public sealed class FloatingBodyTests : IDisposable
     // the sign or changing how delta enters the line fails here, not only the Zone function's pin above.
     private Ship ShipAt(float x, out Zone zone)
     {
-        var cache = AetheriaStores.Open(Path.Combine(_root, Guid.NewGuid().ToString("N") + ".cc"), catalogWritable: true);
+        var cache = AetheriaStores.Open(Path.Combine(_root, Guid.NewGuid().ToString("N") + ".cc"), Path.Combine(_root, Guid.NewGuid().ToString("N") + ".run.cc"), catalogWritable: true);
         _caches.Add(cache);
         var hullShape = new Shape(5, 5);
         foreach (var cell in hullShape.AllCoordinates) hullShape[cell] = true;
diff --git a/tests/Aetheria.Shared.Tests/FlowFieldTests.cs b/tests/Aetheria.Shared.Tests/FlowFieldTests.cs
index 58519026e..4924daa81 100644
--- a/tests/Aetheria.Shared.Tests/FlowFieldTests.cs
+++ b/tests/Aetheria.Shared.Tests/FlowFieldTests.cs
@@ -19,7 +19,7 @@ public sealed class FlowFieldTests : IDisposable
     public FlowFieldTests()
     {
         Directory.CreateDirectory(_root);
-        _cache = AetheriaStores.Open(Path.Combine(_root, "flow.cc"), catalogWritable: true);
+        _cache = AetheriaStores.Open(Path.Combine(_root, "flow.cc"), Path.Combine(_root, "flow-run.cc"), catalogWritable: true);
         _cache.Upsert(new VerseGrammar { Revision = 1 });
         _cache.FlushAsync().Wait();
         var settings = new GameplaySettings
diff --git a/tests/Aetheria.Shared.Tests/GravitySubtractTests.cs b/tests/Aetheria.Shared.Tests/GravitySubtractTests.cs
index abbeeeed6..a513aad59 100644
--- a/tests/Aetheria.Shared.Tests/GravitySubtractTests.cs
+++ b/tests/Aetheria.Shared.Tests/GravitySubtractTests.cs
@@ -17,7 +17,7 @@ public sealed class GravitySubtractTests : IDisposable
     public GravitySubtractTests()
     {
         Directory.CreateDirectory(_root);
-        _cache = AetheriaStores.Open(Path.Combine(_root, "grav.cc"), catalogWritable: true);
+        _cache = AetheriaStores.Open(Path.Combine(_root, "grav.cc"), Path.Combine(_root, "grav-run.cc"), catalogWritable: true);
         _cache.Upsert(new VerseGrammar { Revision = 1 });
         _cache.FlushAsync().Wait();
         var settings = new GameplaySettings
diff --git a/tests/Aetheria.Shared.Tests/LootTests.cs b/tests/Aetheria.Shared.Tests/LootTests.cs
index bf2b85793..5a5bfce7d 100644
--- a/tests/Aetheria.Shared.Tests/LootTests.cs
+++ b/tests/Aetheria.Shared.Tests/LootTests.cs
@@ -73,7 +73,7 @@ public sealed class LootTests : IDisposable
             UnaidedAccuracy = .05f, UnaidedTracking = 10f, UnaidedPrecision = 2f, AgentMinHitProbability = 0f,
             LootDropProbability = probability, LootDropVelocity = velocity, FloatingItemLifetime = lifetime
         };
-        var cache = AetheriaStores.Open(Path.Combine(_root, Guid.NewGuid().ToString("N") + ".cc"), catalogWritable: true);
+        var cache = AetheriaStores.Open(Path.Combine(_root, Guid.NewGuid().ToString("N") + ".cc"), Path.Combine(_root, Guid.NewGuid().ToString("N") + ".run.cc"), catalogWritable: true);
         _caches.Add(cache);
         cache.Upsert(new VerseGrammar { Revision = 1 });
         var hardpoint = new HardpointData { Type = HardpointType.Sensors, Position = new int2(0, 0), Shape = new Shape() };
diff --git a/tests/Aetheria.Shared.Tests/MineTests.cs b/tests/Aetheria.Shared.Tests/MineTests.cs
index 4155e80cf..4d42e0add 100644
--- a/tests/Aetheria.Shared.Tests/MineTests.cs
+++ b/tests/Aetheria.Shared.Tests/MineTests.cs
@@ -78,7 +78,7 @@ public sealed class MineTests : IDisposable
             FiringArc = 170, CommitHorizon = .5f, SchematicCellSize = 2f,
             UnaidedAccuracy = .05f, UnaidedTracking = 10f, UnaidedPrecision = 1000f, AgentMinHitProbability = 0f
         };
-        var cache = AetheriaStores.Open(Path.Combine(_root, Guid.NewGuid().ToString("N") + ".cc"), catalogWritable: true);
+        var cache = AetheriaStores.Open(Path.Combine(_root, Guid.NewGuid().ToString("N") + ".cc"), Path.Combine(_root, Guid.NewGuid().ToString("N") + ".run.cc"), catalogWritable: true);
         _caches.Add(cache);
         cache.Upsert(new VerseGrammar { Revision = 1 });
         HullData Hull(string name, Shape shape) => new HullData