diff --git a/osu.Game.Rulesets.Taiko/Beatmaps/TaikoBeatmapConverter.cs b/osu.Game.Rulesets.Taiko/Beatmaps/TaikoBeatmapConverter.cs
index 41972b5d20..acd6d43284 100644
--- a/osu.Game.Rulesets.Taiko/Beatmaps/TaikoBeatmapConverter.cs
+++ b/osu.Game.Rulesets.Taiko/Beatmaps/TaikoBeatmapConverter.cs
@@ -168,7 +168,6 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
                 {
                     StartTime = obj.StartTime,
                     Samples = obj.Samples,
-                    IsStrong = strong,
                     Duration = endTimeData.Duration,
                     RequiredHits = (int)Math.Max(1, endTimeData.Duration / 1000 * hitMultiplier)
                 };
diff --git a/osu.Game.Rulesets.Taiko/Objects/Swell.cs b/osu.Game.Rulesets.Taiko/Objects/Swell.cs
index c3ea71af3f..702bf63bf5 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Swell.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Swell.cs
@@ -1,6 +1,7 @@
 // Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
 using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Rulesets.Taiko.Objects
@@ -16,6 +17,8 @@ namespace osu.Game.Rulesets.Taiko.Objects
         /// </summary>
         public int RequiredHits = 10;
 
+        public override bool IsStrong { set => throw new NotSupportedException($"{nameof(Swell)} cannot be a strong hitobject."); }
+
         protected override void CreateNestedHitObjects()
         {
             base.CreateNestedHitObjects();
diff --git a/osu.Game.Rulesets.Taiko/Objects/TaikoHitObject.cs b/osu.Game.Rulesets.Taiko/Objects/TaikoHitObject.cs
index 6948c5bcde..9c86b60688 100644
--- a/osu.Game.Rulesets.Taiko/Objects/TaikoHitObject.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/TaikoHitObject.cs
@@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Taiko.Objects
         /// Whether this HitObject is a "strong" type.
         /// Strong hit objects give more points for hitting the hit object with both keys.
         /// </summary>
-        public bool IsStrong;
+        public virtual bool IsStrong { get; set; }
 
         protected override void CreateNestedHitObjects()
         {
diff --git a/osu.Game.Tests/Visual/TestCaseBeatmapInfoWedge.cs b/osu.Game.Tests/Visual/TestCaseBeatmapInfoWedge.cs
index b232180eba..175db7d246 100644
--- a/osu.Game.Tests/Visual/TestCaseBeatmapInfoWedge.cs
+++ b/osu.Game.Tests/Visual/TestCaseBeatmapInfoWedge.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using JetBrains.Annotations;
 using NUnit.Framework;
 using OpenTK;
 using osu.Framework.Allocation;
@@ -116,7 +117,7 @@ namespace osu.Game.Tests.Visual
 
         private void testNullBeatmap()
         {
-            selectNullBeatmap();
+            selectBeatmap(null);
             AddAssert("check empty version", () => string.IsNullOrEmpty(infoWedge.Info.VersionLabel.Text));
             AddAssert("check default title", () => infoWedge.Info.TitleLabel.Text == Beatmap.Default.BeatmapInfo.Metadata.Title);
             AddAssert("check default artist", () => infoWedge.Info.ArtistLabel.Text == Beatmap.Default.BeatmapInfo.Metadata.Artist);
@@ -124,28 +125,19 @@ namespace osu.Game.Tests.Visual
             AddAssert("check no info labels", () => !infoWedge.Info.InfoLabelContainer.Children.Any());
         }
 
-        private void selectBeatmap(IBeatmap b)
+        private void selectBeatmap([CanBeNull] IBeatmap b)
         {
             BeatmapInfoWedge.BufferedWedgeInfo infoBefore = null;
 
-            AddStep($"select {b.Metadata.Title} beatmap", () =>
+            AddStep($"select {b?.Metadata.Title ?? "null"} beatmap", () =>
             {
                 infoBefore = infoWedge.Info;
-                infoWedge.Beatmap = Beatmap.Value = new TestWorkingBeatmap(b);
+                infoWedge.Beatmap = Beatmap.Value = b == null ? Beatmap.Default : new TestWorkingBeatmap(b);
             });
 
             AddUntilStep(() => infoWedge.Info != infoBefore, "wait for async load");
         }
 
-        private void selectNullBeatmap()
-        {
-            AddStep("select null beatmap", () =>
-            {
-                Beatmap.Value = Beatmap.Default;
-                infoWedge.Beatmap = Beatmap;
-            });
-        }
-
         private IBeatmap createTestBeatmap(RulesetInfo ruleset)
         {
             List<HitObject> objects = new List<HitObject>();
diff --git a/osu.Game/Beatmaps/BeatmapManager.cs b/osu.Game/Beatmaps/BeatmapManager.cs
index 67f02c8ac4..1c28b533d2 100644
--- a/osu.Game/Beatmaps/BeatmapManager.cs
+++ b/osu.Game/Beatmaps/BeatmapManager.cs
@@ -329,7 +329,7 @@ namespace osu.Game.Beatmaps
                 return;
             }
 
-            await Task.Factory.StartNew(() => Import(stable.GetDirectories("Songs")), TaskCreationOptions.LongRunning);
+            await Task.Factory.StartNew(() => Import(stable.GetDirectories("Songs").Select(f => stable.GetFullPath(f)).ToArray()), TaskCreationOptions.LongRunning);
         }
 
         /// <summary>
diff --git a/osu.Game/Database/ArchiveModelManager.cs b/osu.Game/Database/ArchiveModelManager.cs
index 0465c0ad73..c00df59e3e 100644
--- a/osu.Game/Database/ArchiveModelManager.cs
+++ b/osu.Game/Database/ArchiveModelManager.cs
@@ -412,7 +412,7 @@ namespace osu.Game.Database
         private ArchiveReader getReaderFrom(string path)
         {
             if (ZipUtils.IsZipArchive(path))
-                return new ZipArchiveReader(Files.Storage.GetStream(path), Path.GetFileName(path));
+                return new ZipArchiveReader(File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read), Path.GetFileName(path));
             if (Directory.Exists(path))
                 return new LegacyFilesystemReader(path);
             throw new InvalidFormatException($"{path} is not a valid archive");
diff --git a/osu.Game/osu.Game.csproj b/osu.Game/osu.Game.csproj
index e9fc51ee9b..eef586fd4c 100644
--- a/osu.Game/osu.Game.csproj
+++ b/osu.Game/osu.Game.csproj
@@ -18,7 +18,7 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="2.1.1" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
-    <PackageReference Include="ppy.osu.Framework" Version="2018.806.0" />
+    <PackageReference Include="ppy.osu.Framework" Version="2018.815.0" />
     <PackageReference Include="SharpCompress" Version="0.22.0" />
     <PackageReference Include="NUnit" Version="3.10.1" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />