Catching throwable leads to madness, lets do this safely.

Essentials/src/com/earth2me/essentials/register/payment/methods/VaultEco.java

@@ -126,7 +126,11 @@ public class VaultEco implements Method
 			RegisteredServiceProvider<Economy> ecoPlugin = plugin.getServer().getServicesManager().getRegistration(net.milkbowl.vault.economy.Economy.class);
 			return plugin instanceof Vault && ecoPlugin != null && !ecoPlugin.getProvider().getName().equals("Essentials Economy");
 		}
-		catch (Throwable e)
+		catch (LinkageError e)
+		{
+			return false;
+		}
+		catch (Exception e)
 		{
 			return false;
 		}