Singleplayer, integrated server doesn't start

lwjgl-rundir/resources/lang/en_US.lang

@@ -1,4 +1,3 @@
-
 language.name=English
 language.region=US
 language.code=en_US
@@ -11,6 +10,7 @@ gui.up=Up
 gui.down=Down
 gui.yes=Yes
 gui.no=No
+gui.killTask=Kill Task
 
 translation.test.none=Hello, world!
 translation.test.complex=Prefix, %s%2$s again %s and %1$s lastly %s and also %1$s again!
@@ -70,16 +70,15 @@ profile.clearSkin=Clear List
 
 fancyGraphicsNote=go to -> Options -> Video Settings on the pause menu to enable fancy graphics and smooth lighting
 
-
 selectWorld.title=Select World
 selectWorld.empty=empty
 selectWorld.world=World
 selectWorld.select=Play Selected World
 selectWorld.create=Create New World
-selectWorld.recreate=Re-Create
+selectWorld.backup=Backup
 selectWorld.createDemo=Play New Demo World
-selectWorld.delete=Delete
 selectWorld.rename=Rename
+selectWorld.delete=Delete
 selectWorld.deleteQuestion=Are you sure you want to delete this world?
 selectWorld.deleteWarning=will be lost forever! (A long time!)
 selectWorld.deleteButton=Delete
@@ -94,6 +93,33 @@ selectWorld.enterSeed=Seed for the World Generator
 selectWorld.seedInfo=Leave blank for a random seed
 selectWorld.cheats=Cheats
 selectWorld.customizeType=Customize
+selectWorld.duplicateTitle=Duplicate World
+selectWorld.duplicateButton=Duplicate
+selectWorld.importName=Set World Name
+
+selectWorld.backup.title=World Backup Menu:
+selectWorld.backup.recreate=Re-Create World
+selectWorld.backup.recreate.tooltip=Create a new world with the same seed
+selectWorld.backup.seed=Seed:
+selectWorld.backup.duplicate=Duplicate World
+selectWorld.backup.duplicate.tooltip=Copy this world into a new save
+selectWorld.backup.export=Export EPK File
+selectWorld.backup.export.tooltip=Download this world as a compressed .epk file
+selectWorld.backup.vanilla=Convert to Vanilla
+selectWorld.backup.vanilla.tooltip=Download this world as a vanilla 1.6.4 world
+selectWorld.backup.clearPlayerData=Delete Player Data
+selectWorld.backup.clearPlayerData.tooltip=Clears the inventories of all players except the owner
+
+selectWorld.backup.clearPlayerData.warning1=Are you sure you want to delete all player data?
+selectWorld.backup.clearPlayerData.warning2=All players in '$world$' will lose their inventories (besides $player$)
+
+selectWorld.create.title=What do you wanna do?
+selectWorld.create.create=Create New World
+selectWorld.create.create.tooltip=Make a new world for eaglercraft
+selectWorld.create.import=Load EPK File
+selectWorld.create.import.tooltip=Load an Eaglercraft .epk world file
+selectWorld.create.vanilla=Import Vanilla World
+selectWorld.create.vanilla.tooltip=Load a vanilla minecraft 1.6.4 world
 
 createWorld.customize.presets=Presets
 createWorld.customize.presets.title=Select a Preset
@@ -140,6 +166,17 @@ selectWorld.hardcoreMode=Hardcore:
 selectWorld.hardcoreMode.info=World is deleted upon death
 selectWorld.bonusItems=Bonus Chest:
 
+selectWorld.progress.deleting=Deleting World
+selectWorld.progress.renaming=Renaming World
+selectWorld.progress.copying=Copying World
+selectWorld.progress.exporting.1=Exporting as EPK
+selectWorld.progress.exporting.2=Exporting as Vanilla
+selectWorld.progress.importing.0=Importing as EPK
+selectWorld.progress.importing.1=Importing as Vanilla
+selectWorld.progress.cancelWarning=Do you really want to 'Kill Task'? Your world may fail to save
+selectWorld.progress.confirmCancel=Yes, Kill Task
+selectWorld.progress.continue=Continue
+
 generator.default=Default
 generator.flat=Superflat
 generator.largeBiomes=Large Biomes