At the moment you currently have it so the version must match on the client side, which seems odd for a server side mod. This is very important so we can implement things like the command block changes without requiring the whole modpack to be updated:

@Mod(modid = FTBIslands.MODID, name = FTBIslands.NAME, version = FTBIslands.VERSION, acceptableRemoteVersions = "*")

Also ExCompressum isn't needed as an include.

IslandCreator.java

-import net.blay09.mods.excompressum.ModItems;
+import cpw.mods.fml.common.registry.GameRegistry;

...

-            chest.setInventorySlotContents(10, new ItemStack(ModItems.chickenStick, 1));
+            Item chickenStick = GameRegistry.findItem("excompressum", "chickenStick");
+
+            if (chickenStick != null) {
+                chest.setInventorySlotContents(10, new ItemStack(chickenStick, 1));
+            }

Also missing LICENSE, example: https://github.com/PC-Logix/OpenPrinter/blob/1.7/LICENSE

This should be in the pack update soon. I had all this but I was a bit rushed

I've just settled the ExCompressum dependency issue, and the license will have to be Cricket's decision.

This is fixed now.