diff --git a/Themes/_fallback/metrics.ini b/Themes/_fallback/metrics.ini
index 80822b09eb..8f5acd8502 100644
--- a/Themes/_fallback/metrics.ini
+++ b/Themes/_fallback/metrics.ini
@@ -706,7 +706,7 @@ PercentUseRemainder=false
 ApplyScoreDisplayOptions=true
 DancePointsDigits=5
 #
-Format="%2d"
+Format=FormatPercentScore
 #
 RemainderFormat=
 #
@@ -1399,7 +1399,7 @@ DancePointsDigits=1
 PercentUseRemainder=true
 ApplyScoreDisplayOptions=false
 FormatPercentScore=FormatPercentScore
-Format=
+Format=FormatPercentScore
 
 [SoundEffectControl]
 LockToHold=false
diff --git a/Themes/default/metrics.ini b/Themes/default/metrics.ini
index 1ca22b3422..dc6b0a6018 100644
--- a/Themes/default/metrics.ini
+++ b/Themes/default/metrics.ini
@@ -140,8 +140,6 @@ NumLivesP2OnCommand=zoomx,-1
 NumLivesP2LoseLifeCommand=zoomx,-1.5;zoomy,1.5;linear,0.15;zoomx,-1;zoomy,1
 
 [LifeMeterBattery Percent]
-# still asking for this even though it's in fallback... -aj
-Format=
 #
 PercentP2OnCommand=zoom,0.7;zoomx,-0.7;shadowlength,0;diffuse,PlayerColor(PLAYER_2)
 DancePointsP2OnCommand=zoom,0.7;zoomx,-0.7;shadowlength,0;diffuse,PlayerColor(PLAYER_2)
diff --git a/src/Actor.cpp b/src/Actor.cpp
index c93509fa69..3d8e8b9694 100644
--- a/src/Actor.cpp
+++ b/src/Actor.cpp
@@ -785,7 +785,7 @@ RString Actor::GetLineage() const
 	
 	if( m_pParent )
 		sPath = m_pParent->GetLineage() + '/';
-	sPath += ssprintf( "<%s> %s", typeid(*this).name(), m_sName.c_str() );
+	sPath += ssprintf( "<type %s> %s", typeid(*this).name(), m_sName.c_str() );
 	return sPath;
 }
 
@@ -1130,7 +1130,7 @@ void Actor::RunCommands( const LuaReference& cmds, const LuaReference *pParamTab
 {
 	if( !cmds.IsSet() || cmds.IsNil() )
 	{
-		LuaHelpers::ReportScriptError("RunCommands: command is unset or nil");
+		LuaHelpers::ReportScriptErrorFmt("RunCommands: commands for %s are unset or nil", GetLineage().c_str());
 		return;
 	}
 
@@ -1140,7 +1140,7 @@ void Actor::RunCommands( const LuaReference& cmds, const LuaReference *pParamTab
 	cmds.PushSelf( L );
 	if( lua_isnil(L, -1) )
 	{
-		LuaHelpers::ReportScriptError("Error compiling commands");
+		LuaHelpers::ReportScriptErrorFmt("RunCommands: Error compiling commands for %s", GetLineage().c_str());
 		LUA->Release(L);
 		return;
 	}
@@ -1155,7 +1155,7 @@ void Actor::RunCommands( const LuaReference& cmds, const LuaReference *pParamTab
 		pParamTable->PushSelf( L );
 
 	// call function with 2 arguments and 0 results
-	RString Error= "Error playing command: ";
+	RString Error= "Error playing command:";
 	LuaHelpers::RunScriptOnStack(L, Error, 2, 0, true);
 
 	LUA->Release(L);
diff --git a/src/PercentageDisplay.cpp b/src/PercentageDisplay.cpp
index 28eec2fa7e..99cc9971e4 100644
--- a/src/PercentageDisplay.cpp
+++ b/src/PercentageDisplay.cpp
@@ -33,10 +33,22 @@ void PercentageDisplay::LoadFromNode( const XNode* pNode )
 	pNode->GetAttrValue( "AutoRefresh", m_bAutoRefresh );
 	{
 		Lua *L = LUA->Get();
-		if( pNode->PushAttrValue(L, "FormatPercentScore") )
+		if(pNode->PushAttrValue(L, "FormatPercentScore"))
+		{
 			m_FormatPercentScore.SetFromStack( L );
+			if(m_FormatPercentScore.GetLuaType() != LUA_TFUNCTION)
+			{
+				// Not reported as an error because _fallback and default provided bad
+				// examples in their [LifeMeterBattery Percent]:Format metric and nobody
+				// realized it was supposed to be set to a function. -Kyz
+				LOG->Trace("Format attribute for PercentageDisplay named '%s' is not a function. Defaulting to 'FormatPercentScore'.", GetName().c_str());
+				m_FormatPercentScore.SetFromExpression("FormatPercentScore");
+			}
+		}
 		else
+		{
 			lua_pop(L, 1);
+		}
 		LUA->Release(L);
 	}
 
@@ -86,9 +98,12 @@ void PercentageDisplay::Load( const PlayerState *pPlayerState, const PlayerStage
 	m_sPercentFormat = THEME->GetMetric( sMetricsGroup, "PercentFormat" );
 	m_sRemainderFormat = THEME->GetMetric( sMetricsGroup, "RemainderFormat" );
 
-	if( m_FormatPercentScore.IsNil() )
+	if(m_FormatPercentScore.GetLuaType() != LUA_TFUNCTION)
 	{
-		LOG->Trace( "Format is nil in [%s]. Defaulting to 'FormatPercentScore'.", sMetricsGroup.c_str() );
+		// Not reported as an error because _fallback and default provided bad
+		// examples in their [LifeMeterBattery Percent]:Format metric and nobody
+		// realized it was supposed to be set to a function. -Kyz
+		LOG->Trace("Format metric is not a function in [%s]. Defaulting to 'FormatPercentScore'.", sMetricsGroup.c_str());
 		m_FormatPercentScore.SetFromExpression( "FormatPercentScore" );
 	}
 
@@ -157,14 +172,16 @@ void PercentageDisplay::Refresh()
 		}
 		else
 		{
-			Lua *L = LUA->Get();
-			m_FormatPercentScore.PushSelf( L );
-			ASSERT( !lua_isnil(L, -1) );
-			LuaHelpers::Push( L, fPercentDancePoints );
-			RString Error= "Error running FormatPercentScore: ";
-			LuaHelpers::RunScriptOnStack(L, Error, 1, 1, true); // 1 arg, 1 result
-			LuaHelpers::Pop( L, sNumToDisplay );
-			LUA->Release(L);
+			if(m_FormatPercentScore.GetLuaType() == LUA_TFUNCTION)
+			{
+				Lua *L = LUA->Get();
+				m_FormatPercentScore.PushSelf( L );
+				LuaHelpers::Push( L, fPercentDancePoints );
+				RString Error= "Error running FormatPercentScore: ";
+				LuaHelpers::RunScriptOnStack(L, Error, 1, 1, true); // 1 arg, 1 result
+				LuaHelpers::Pop( L, sNumToDisplay );
+				LUA->Release(L);
+			}
 
 			// HACK: Use the last frame in the numbers texture as '-'
 			sNumToDisplay.Replace('-','x');