fix nil value error because depends.txt and temporally disable moretrees compatibility

depends.txt

@@ -0,0 +1 @@
+default

init.lua

@@ -533,7 +533,8 @@ columnia.register_column_ia("rusty_block", "columnia:rusty_block",
 		"Rusty Column Crosslink",
 		"Rusty Column Link",
 		"Rusty Column Linkdown",
-		default.node_sound_stone_defaults())
+		default.node_sound_stone_defaults()
+        )
 
 columnia.register_column_ia("stone", "default:stone",
 		{cracky=3},
@@ -544,7 +545,8 @@ columnia.register_column_ia("stone", "default:stone",
 		"Stone Column Crosslink",
 		"Stone Column Link",
 		"Stone Column Linkdown",
-		default.node_sound_stone_defaults())
+		default.node_sound_stone_defaults()
+        )
 		
 columnia.register_column_ia("stonebrick", "default:stonebrick",
 		{cracky=3},
@@ -555,7 +557,8 @@ columnia.register_column_ia("stonebrick", "default:stonebrick",
 		"Stone Brick Column Crosslink",
 		"Stone Brick Column Link",
 		"Stone Brick Column Linkdown",
-		default.node_sound_stone_defaults())
+		default.node_sound_stone_defaults()
+        )
 
 columnia.register_column_ia("desert_stonebrick", "default:desert_stonebrick",
 		{cracky=3},
@@ -566,7 +569,8 @@ columnia.register_column_ia("desert_stonebrick", "default:desert_stonebrick",
 		"Desert Stone Brick Column Crosslink",
 		"Desert Stone Brick Column Link",
 		"Desert Stone Brick Column Linkdown",
-		default.node_sound_stone_defaults())	
+		default.node_sound_stone_defaults()
+        )	
 
 columnia.register_column_ia("desert_stone", "default:desert_stone",
 		{cracky=3},
@@ -577,7 +581,8 @@ columnia.register_column_ia("desert_stone", "default:desert_stone",
 		"Desert Stone Column Crosslink",
 		"Desert Stone Column Link",
 		"Desert Stone Column Linkdown",
-		default.node_sound_stone_defaults())		
+		default.node_sound_stone_defaults()
+        )		
 		
 columnia.register_column_ia("cobble", "default:cobble",
 		{cracky=3},
@@ -588,7 +593,8 @@ columnia.register_column_ia("cobble", "default:cobble",
 		"Cobble Column Crosslink",
 		"Cobble Column Link",
 		"Cobble Column Linkdown",
-		default.node_sound_stone_defaults())
+		default.node_sound_stone_defaults()
+        )
 
 columnia.register_column_ia("brick", "default:brick",
 		{cracky=3},
@@ -599,7 +605,8 @@ columnia.register_column_ia("brick", "default:brick",
 		"Brick Column Crosslink",
 		"Brick Column Link",
 		"Brick Column Linkdown",
-		default.node_sound_stone_defaults())	
+		default.node_sound_stone_defaults()
+        )	
 			
 columnia.register_column_ia("sandstone", "default:sandstone",
 		{crumbly=2,cracky=2},
@@ -610,7 +617,8 @@ columnia.register_column_ia("sandstone", "default:sandstone",
 		"Sandstone Column Crosslink",
 		"Sandstone Column Link",
 		"Sandstone Column Linkdown",
-		default.node_sound_stone_defaults())
+		default.node_sound_stone_defaults()
+        )
 		
 columnia.register_column_ia("sandstonebrick", "default:sandstonebrick",
 		{crumbly=2,cracky=2},
@@ -621,7 +629,8 @@ columnia.register_column_ia("sandstonebrick", "default:sandstonebrick",
 		"Sandstone Brick Column Crosslink",
 		"Sandstone Brick Column Link",
 		"Sandstone Brick Column Linkdown",
-		default.node_sound_stone_defaults())
+		default.node_sound_stone_defaults()
+        )
 		
 columnia.register_column_ia("wood", "group:wood",
 		{snappy=2,choppy=2,oddly_breakable_by_hand=2,flammable=3},
@@ -645,35 +654,35 @@ columnia.register_column_ia("junglewood", "default:junglewood",
 		"Junglewood Column Linkdown",
 		default.node_sound_wood_defaults())
 
-if core.get_modpath( 'moretrees' ) then
+--if core.get_modpath( 'moretrees' ) then
-	local morewood = {
+--	local morewood = {
-		{ name='beech', description='Beech Tree' },
+--		{ name='beech', description='Beech Tree' },
-		{ name='apple_tree',	description='Apple Tree' },
+--		{ name='apple_tree',	description='Apple Tree' },
-		{ name='oak', description='Oak Tree' },
+--		{ name='oak', description='Oak Tree' },
-		{ name='sequoia', description='Giant Sequoia' },
+--		{ name='sequoia', description='Giant Sequoia' },
-		{ name='birch', description='Birch Tree' },
+--		{ name='birch', description='Birch Tree' },
-		{ name='palm', description='Palm Tree', },
+--		{ name='palm', description='Palm Tree', },
-		{ name='spruce', description='Spruce Tree' },
+--		{ name='spruce', description='Spruce Tree' },
-		{ name='pine', description='Pine Tree' },
+--		{ name='pine', description='Pine Tree' },
-		{ name='willow', description='Willow Tree' },
+--		{ name='willow', description='Willow Tree' },
-		{ name='acacia', description='Acacia Tree' },
+--		{ name='acacia', description='Acacia Tree' },
-		{ name='rubber_tree',	description='Rubber Tree' },
+--		{ name='rubber_tree',	description='Rubber Tree' },
-		{ name='fir', description='Douglas Fir' }
+--		{ name='fir', description='Douglas Fir' }
-	}
+--	}
-	for _,t in pairs( morewood ) do
+--	for _,t in pairs( morewood ) do
-		print('register: '.. t.name)
+--		print('register: '.. t.name)
-		columnia.register_column_ia( t.name, 'moretrees:' .. t.name ..'_planks',
+--		columnia.register_column_ia( t.name, 'moretrees:' .. t.name ..'_planks',
-			{snappy=2,choppy=2,oddly_breakable_by_hand=2,flammable=3},
+--			{snappy=2,choppy=2,oddly_breakable_by_hand=2,flammable=3},
-			{ 'moretrees_' .. t.name .. '_wood.png' },
+--			{ 'moretrees_' .. t.name .. '_wood.png' },
-			t.description .. ' Column',
+--			t.description .. ' Column',
-			t.description .. ' Column Top',
+--			t.description .. ' Column Top',
-			t.description .. ' Column Bottom',
+--			t.description .. ' Column Bottom',
-			t.description .. ' Column Crosslink',
+--			t.description .. ' Column Crosslink',
-			t.description .. ' Column Link',
+--			t.description .. ' Column Link',
-			t.description .. ' Column Linkdown',
+--			t.description .. ' Column Linkdown',
-			default.node_sound_wood_defaults())
+--			default.node_sound_wood_defaults())
-	end
+--	end
-end
+--end
 
 if core.get_modpath('moreblocks') then
 	stairsplus:register_all(