Fixed #1184

core/src/io/anuke/mindustry/mod/ContentParser.java

@@ -173,7 +173,10 @@ public class ContentParser{
                 }
             }else{
                 //TODO generate dynamically instead of doing.. this
-                Class<? extends Block> type = resolve(getType(value),
+                Class<? extends Block> type;
+
+                try{
+                    type = resolve(getType(value),
                     "io.anuke.mindustry.world",
                     "io.anuke.mindustry.world.blocks",
                     "io.anuke.mindustry.world.blocks.defense",
@@ -187,6 +190,9 @@ public class ContentParser{
                     "io.anuke.mindustry.world.blocks.storage",
                     "io.anuke.mindustry.world.blocks.units"
                     );
+                }catch(IllegalArgumentException e){
+                    type = Block.class;
+                }
 
                 block = make(type, mod + "-" + name);
             }

desktop/src/io/anuke/mindustry/desktop/DesktopLauncher.java

@@ -107,6 +107,9 @@ public class DesktopLauncher extends ClientLauncher{
                 if(SteamAPI.restartAppIfNecessary(SVars.steamID)){
                     System.exit(0);
                 }
+            }catch(NullPointerException ignored){
+                steam = false;
+                Log.info("Running in offline mode.");
             }catch(Throwable e){
                 steam = false;
                 Log.err("Failed to load Steam native libraries.");