diff --git a/src/MusicWheel.cpp b/src/MusicWheel.cpp
index 83f868cf5a..ea58ae59f9 100644
--- a/src/MusicWheel.cpp
+++ b/src/MusicWheel.cpp
@@ -802,8 +802,12 @@ void MusicWheel::BuildWheelItemDatas( std::vector<MusicWheelItemData *> &arrayWh
 								unsigned j;
 								for( j=i; j < arraySongs.size(); j++ )
 								{
-									if( SONGMAN->GetGroup(arraySongs[j])->GetGroupName() != sThisSection )
+									if ( SONGMAN->GetGroup(arraySongs[j]) == nullptr ) {
+										LOG->Warn( "Song %s has no group!", arraySongs[j]->GetSongDir().c_str() );
+										continue;
+									} else if ( SONGMAN->GetGroup(arraySongs[j])->GetGroupName() != sThisSection ) {
 										break;
+									}
 								}
 								iSectionCount = j-i;
 
@@ -847,7 +851,7 @@ void MusicWheel::BuildWheelItemDatas( std::vector<MusicWheelItemData *> &arrayWh
 								sLastSection = sThisSection;
 							}
 						}
-						arrayWheelItemDatas.push_back( new MusicWheelItemData(WheelItemDataType_Song, pSong, sLastSection, nullptr, SONGMAN->GetGroup(pSong), SONGMAN->GetSongColor(pSong), 0) );
+						arrayWheelItemDatas.push_back( new MusicWheelItemData(WheelItemDataType_Song, pSong, sLastSection, nullptr, nullptr, SONGMAN->GetSongColor(pSong), 0) );
 					}
 					break;
 			}
diff --git a/src/Song.cpp b/src/Song.cpp
index 5821d0ddd1..4a175a0ef5 100644
--- a/src/Song.cpp
+++ b/src/Song.cpp
@@ -477,7 +477,13 @@ bool Song::ReloadFromSongDir( RString sDir )
 		return false;
 	copy.RemoveAutoGenNotes();
 	*this = copy;
-	m_SongTiming.m_fBeat0GroupOffsetInSeconds = SONGMAN->GetGroup(this)->GetSyncOffset();
+	
+	if (SONGMAN->GetGroup(this) != nullptr) {
+		m_SongTiming.m_fBeat0GroupOffsetInSeconds = SONGMAN->GetGroup(this)->GetSyncOffset();
+	} else {
+		m_SongTiming.m_fBeat0GroupOffsetInSeconds = PREFSMAN->m_fMachineSyncBias;
+		LOG->Warn("Song %s has no group, using machine sync bias.", m_sMainTitle.c_str());
+	}
 
 	/* Go through the steps, first setting their Song pointer to this song
 	 * (instead of the copy used above), and constructing a map to let us
@@ -493,7 +499,11 @@ bool Song::ReloadFromSongDir( RString sDir )
 		// Reapply the Group Offset if the steps have their own timing data.
 		if( mNewSteps[id]->m_Timing.empty() )
 			continue;
-		mNewSteps[id]->m_Timing.m_fBeat0GroupOffsetInSeconds = SONGMAN->GetGroup(this)->GetSyncOffset();
+		if (SONGMAN->GetGroup(this) != nullptr)
+			mNewSteps[id]->m_Timing.m_fBeat0GroupOffsetInSeconds = SONGMAN->GetGroup(this)->GetSyncOffset();
+		else
+			m_SongTiming.m_fBeat0GroupOffsetInSeconds = PREFSMAN->m_fMachineSyncBias;
+			LOG->Warn("Song %s has no group, using machine sync bias.", m_sMainTitle.c_str());
 	}
 
 	// Now we wipe out the new pointers, which were shallow copied and not deep copied...
diff --git a/src/SongUtil.cpp b/src/SongUtil.cpp
index aaea32d4e5..5a1d3b6687 100644
--- a/src/SongUtil.cpp
+++ b/src/SongUtil.cpp
@@ -600,9 +600,19 @@ void SongUtil::SortSongPointerArrayByGroup( std::vector<Song*> &vpSongsInOut )
 
 int SongUtil::CompareSongPointersByGroup(const Song *pSong1, const Song *pSong2)
 {
+	RString s1 = "";
+	RString s2 = "";
+
+	if( SONGMAN->GetGroup(pSong1) != nullptr )
+		s1 = SONGMAN->GetGroup(pSong1)->GetSortTitle();
+	else
+		LOG->Warn("SongUtil::CompareSongPointersByGroup: %s has no group", pSong1->GetSongDir().c_str());
+
+	if( SONGMAN->GetGroup(pSong2) != nullptr )
+		s2 = SONGMAN->GetGroup(pSong2)->GetSortTitle();
+	else
+		LOG->Warn("SongUtil::CompareSongPointersByGroup: %s has no group", pSong2->GetSongDir().c_str());
 	
-	RString s1 = SONGMAN->GetGroup(pSong1)->GetSortTitle();
-	RString s2 = SONGMAN->GetGroup(pSong2)->GetSortTitle();
 	// Sort Titles are the same, fall back on group folder name
 	if( s1 == s2 )
 	{
@@ -618,8 +628,19 @@ int SongUtil::CompareSongPointersByGroup(const Song *pSong1, const Song *pSong2)
 
 static int CompareSongPointersByGroupAndTitle( const Song *pSong1, const Song *pSong2 )
 {
-	RString s1 = SONGMAN->GetGroup(pSong1)->GetSortTitle();
-	RString s2 = SONGMAN->GetGroup(pSong2)->GetSortTitle();
+	RString s1 = "";
+	RString s2 = "";
+
+	if( SONGMAN->GetGroup(pSong1) != nullptr )
+		s1 = SONGMAN->GetGroup(pSong1)->GetSortTitle();
+	else
+		LOG->Warn("SongUtil::CompareSongPointersByGroup: %s has no group", pSong1->GetSongDir().c_str());
+
+	if( SONGMAN->GetGroup(pSong2) != nullptr )
+		s2 = SONGMAN->GetGroup(pSong2)->GetSortTitle();
+	else
+		LOG->Warn("SongUtil::CompareSongPointersByGroup: %s has no group", pSong2->GetSongDir().c_str());
+	
 	// Sort Titles are the same, fall back on group folder name
 	if( s1 == s2 )
 	{
@@ -669,8 +690,12 @@ RString SongUtil::GetSectionNameFromSongAndSort( const Song* pSong, SortOrder so
 	case SORT_PREFERRED:
 		return SONGMAN->SongToPreferredSortSectionName( pSong );
 	case SORT_GROUP:
-		// guaranteed not empty
-		return SONGMAN->GetGroup(pSong)->GetGroupName();
+		if ( SONGMAN->GetGroup(pSong) == nullptr ) {
+			LOG->Warn("SongUtil::GetSectionNameFromSongAndSort: %s has no group", pSong->GetSongDir().c_str());
+			return RString();
+		} else {
+			return SONGMAN->GetGroup(pSong)->GetGroupName();
+		}
 	case SORT_TITLE:
 	case SORT_ARTIST:
 		{