diff --git a/launcher/modplatform/ftb/FTBPackInstallTask.cpp b/launcher/modplatform/ftb/FTBPackInstallTask.cpp
index 063b7cbbc..ea3464e32 100644
--- a/launcher/modplatform/ftb/FTBPackInstallTask.cpp
+++ b/launcher/modplatform/ftb/FTBPackInstallTask.cpp
@@ -92,7 +92,7 @@ void PackInstallTask::executeTask()
 
     auto searchUrl = QString(BuildConfig.FTB_API_BASE_URL + "/modpack/%1/%2").arg(m_pack.id).arg(version.id);
     m_response.reset(new QByteArray());
-    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), m_response));
+    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), m_response.get()));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, this, &PackInstallTask::onManifestDownloadSucceeded);
     QObject::connect(netJob.get(), &NetJob::failed, this, &PackInstallTask::onManifestDownloadFailed);
@@ -233,9 +233,9 @@ void PackInstallTask::createInstance()
     QCoreApplication::processEvents();
 
     auto instanceConfigPath = FS::PathCombine(m_stagingPath, "instance.cfg");
-    auto instanceSettings = std::make_shared<INISettingsObject>(instanceConfigPath);
+    auto instanceSettings = std::make_unique<INISettingsObject>(instanceConfigPath);
 
-    MinecraftInstance instance(m_globalSettings, instanceSettings, m_stagingPath);
+    MinecraftInstance instance(m_globalSettings, std::move(instanceSettings), m_stagingPath);
     auto components = instance.getPackProfile();
     components->buildingFromScratch();
 
diff --git a/launcher/modplatform/ftb/FTBPackInstallTask.h b/launcher/modplatform/ftb/FTBPackInstallTask.h
index 7cbbfc38a..28f363d45 100644
--- a/launcher/modplatform/ftb/FTBPackInstallTask.h
+++ b/launcher/modplatform/ftb/FTBPackInstallTask.h
@@ -84,7 +84,7 @@ class PackInstallTask final : public InstanceTask {
 
     QList<int> m_fileIds;
 
-    std::shared_ptr<QByteArray> m_response;
+    std::unique_ptr<QByteArray> m_response;
 
     Modpack m_pack;
     QString m_versionName;
diff --git a/launcher/modplatform/ftb/FTBPackManifest.cpp b/launcher/modplatform/ftb/FTBPackManifest.cpp
index 85337e731..da633a117 100644
--- a/launcher/modplatform/ftb/FTBPackManifest.cpp
+++ b/launcher/modplatform/ftb/FTBPackManifest.cpp
@@ -60,7 +60,7 @@ static void loadArt(FTB::Art& a, QJsonObject& obj)
     a.height = Json::requireInteger(obj, "height");
     a.compressed = Json::requireBoolean(obj, "compressed");
     a.sha1 = Json::requireString(obj, "sha1");
-    a.size = Json::ensureInteger(obj, "size");
+    a.size = obj["size"].toInt();
     a.updated = Json::requireInteger(obj, "updated");
 }
 
@@ -95,7 +95,7 @@ void FTB::loadModpack(FTB::Modpack& m, QJsonObject& obj)
     m.installs = Json::requireInteger(obj, "installs");
     m.plays = Json::requireInteger(obj, "plays");
     m.updated = Json::requireInteger(obj, "updated");
-    m.refreshed = Json::ensureInteger(obj, "refreshed");
+    m.refreshed = obj["refreshed"].toInt();
     auto artArr = Json::requireArray(obj, "art");
     for (QJsonValueRef artRaw : artArr) {
         auto artObj = Json::requireObject(artRaw);
@@ -143,16 +143,16 @@ static void loadVersionFile(FTB::VersionFile& a, QJsonObject& obj)
     a.path = Json::requireString(obj, "path");
     a.name = Json::requireString(obj, "name");
     a.version = Json::requireString(obj, "version");
-    a.url = Json::ensureString(obj, "url");  // optional
+    a.url = obj["url"].toString();  // optional
     a.sha1 = Json::requireString(obj, "sha1");
-    a.size = Json::ensureInteger(obj, "size");
+    a.size = obj["size"].toInt();
     a.clientOnly = Json::requireBoolean(obj, "clientonly");
     a.serverOnly = Json::requireBoolean(obj, "serveronly");
     a.optional = Json::requireBoolean(obj, "optional");
     a.updated = Json::requireInteger(obj, "updated");
-    auto curseforgeObj = Json::ensureObject(obj, "curseforge");  // optional
-    a.curseforge.project_id = Json::ensureInteger(curseforgeObj, "project");
-    a.curseforge.file_id = Json::ensureInteger(curseforgeObj, "file");
+    auto curseforgeObj = obj["curseforge"].toObject();  // optional
+    a.curseforge.project_id = curseforgeObj["project"].toInt();
+    a.curseforge.file_id = curseforgeObj["file"].toInt();
 }
 
 void FTB::loadVersion(FTB::Version& m, QJsonObject& obj)
@@ -164,7 +164,7 @@ void FTB::loadVersion(FTB::Version& m, QJsonObject& obj)
     m.installs = Json::requireInteger(obj, "installs");
     m.plays = Json::requireInteger(obj, "plays");
     m.updated = Json::requireInteger(obj, "updated");
-    m.refreshed = Json::ensureInteger(obj, "refreshed");
+    m.refreshed = obj["refreshed"].toInt();
     auto specs = Json::requireObject(obj, "specs");
     loadSpecs(m.specs, specs);
     auto targetArr = Json::requireArray(obj, "targets");
diff --git a/launcher/ui/pages/modplatform/ftb/FtbListModel.cpp b/launcher/ui/pages/modplatform/ftb/FtbListModel.cpp
index 83e6202ef..f5d026c68 100644
--- a/launcher/ui/pages/modplatform/ftb/FtbListModel.cpp
+++ b/launcher/ui/pages/modplatform/ftb/FtbListModel.cpp
@@ -51,7 +51,7 @@ QVariant ListModel::data(const QModelIndex& index, int role) const
     } else if (role == Qt::ToolTipRole) {
         return pack.synopsis;
     } else if (role == Qt::DecorationRole) {
-        QIcon placeholder = APPLICATION->getThemedIcon("screenshot-placeholder");
+        QIcon placeholder = QIcon::fromTheme("screenshot-placeholder");
 
         auto iter = m_logoMap.find(pack.safeName);
         if (iter != m_logoMap.end()) {
@@ -97,7 +97,7 @@ void ListModel::request()
     auto netJob = makeShared<NetJob>("Ftb::Request", APPLICATION->network());
     auto url = QString(BuildConfig.FTB_API_BASE_URL + "/modpack/all");
     m_response.reset(new QByteArray());
-    netJob->addNetAction(Net::Download::makeByteArray(QUrl(url), m_response));
+    netJob->addNetAction(Net::Download::makeByteArray(QUrl(url), m_response.get()));
     m_jobPtr = netJob;
     m_jobPtr->start();
 
@@ -147,7 +147,7 @@ void ListModel::requestPack()
     auto netJob = makeShared<NetJob>("Ftb::Search", APPLICATION->network());
     auto searchUrl = QString(BuildConfig.FTB_API_BASE_URL + "/modpack/%1").arg(m_currentPack);
     m_response.reset(new QByteArray());
-    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), m_response));
+    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), m_response.get()));
     m_jobPtr = netJob;
     m_jobPtr->start();
 
diff --git a/launcher/ui/pages/modplatform/ftb/FtbListModel.h b/launcher/ui/pages/modplatform/ftb/FtbListModel.h
index eb8a17649..a7f35f41e 100644
--- a/launcher/ui/pages/modplatform/ftb/FtbListModel.h
+++ b/launcher/ui/pages/modplatform/ftb/FtbListModel.h
@@ -19,6 +19,7 @@
 #include <QAbstractListModel>
 
 #include <QIcon>
+#include <memory>
 #include "modplatform/ftb/FTBPackManifest.h"
 #include "net/NetJob.h"
 
@@ -76,7 +77,7 @@ class ListModel : public QAbstractListModel {
     NetJob::Ptr m_jobPtr;
     int m_currentPack;
     QList<int> m_remainingPacks;
-    std::shared_ptr<QByteArray> m_response;
+    std::unique_ptr<QByteArray> m_response;
 };
 
 }  // namespace Ftb
diff --git a/launcher/ui/pages/modplatform/ftb/FtbPage.h b/launcher/ui/pages/modplatform/ftb/FtbPage.h
index f484ccef0..d85053fab 100644
--- a/launcher/ui/pages/modplatform/ftb/FtbPage.h
+++ b/launcher/ui/pages/modplatform/ftb/FtbPage.h
@@ -58,7 +58,7 @@ class FtbPage : public QWidget, public ModpackProviderBasePage {
     explicit FtbPage(NewInstanceDialog* dialog, QWidget* parent = 0);
     virtual ~FtbPage();
     virtual QString displayName() const override { return "FTB"; }
-    virtual QIcon icon() const override { return APPLICATION->getThemedIcon("ftb_logo"); }
+    virtual QIcon icon() const override { return QIcon::fromTheme("ftb_logo"); }
     virtual QString id() const override { return "ftb"; }
     virtual QString helpPage() const override { return "FTB-platform"; }
     virtual bool shouldDisplay() const override;