diff --git a/src/main/java/world/bentobox/challenges/panel/TryToComplete.java b/src/main/java/world/bentobox/challenges/panel/TryToComplete.java
index ceffdba..3107f84 100644
--- a/src/main/java/world/bentobox/challenges/panel/TryToComplete.java
+++ b/src/main/java/world/bentobox/challenges/panel/TryToComplete.java
@@ -764,23 +764,39 @@ public class TryToComplete
      */
     private ChallengeResult checkOthers()
     {
-        if (!this.addon.isEconomyProvided() ||
-            this.challenge.getRequiredMoney() <= 0 ||
-            !this.addon.getEconomyProvider().has(this.user, this.challenge.getRequiredMoney()))
+    	if (!this.addon.isLevelProvided() && 
+			this.challenge.getRequiredIslandLevel() != 0)
+		{
+			this.user.sendMessage("challenges.missing-addon");
+		}
+    	else if (!this.addon.isEconomyProvided() && 
+			this.challenge.getRequiredMoney() != 0)
+		{
+			this.user.sendMessage("challenges.missing-addon");
+		}
+		else if (this.addon.isEconomyProvided() && this.challenge.getRequiredMoney() < 0)
+		{
+			this.user.sendMessage("challenges.incorrect");
+		}
+    	else if (this.addon.isEconomyProvided() && 
+			!this.addon.getEconomyProvider().has(this.user, this.challenge.getRequiredMoney()))
         {
             this.user.sendMessage("challenges.not-enough-money",
                 "[money]",
                 Integer.toString(this.challenge.getRequiredMoney()));
         }
-        else if (this.challenge.getRequiredExperience() <= 0 ||
-            this.user.getPlayer().getTotalExperience() < this.challenge.getRequiredExperience())
+		else if (this.challenge.getRequiredExperience() < 0)
+		{
+			this.user.sendMessage("challenges.incorrect");
+		}
+        else if (this.user.getPlayer().getTotalExperience() < this.challenge.getRequiredExperience())
         {
             this.user.sendMessage("challenges.not-enough-exp",
                 "[xp]",
                 Integer.toString(this.challenge.getRequiredExperience()));
         }
-        else if (!this.addon.isLevelProvided() ||
-            this.addon.getLevelAddon().getIslandLevel(this.world, this.user.getUniqueId()) < this.challenge.getRequiredIslandLevel())
+        else if (this.addon.isLevelProvided() && 
+			this.addon.getLevelAddon().getIslandLevel(this.world, this.user.getUniqueId()) < this.challenge.getRequiredIslandLevel())
         {
             this.user.sendMessage("challenges.error.island-level",
                 TextVariables.NUMBER,
diff --git a/src/main/resources/locales/en-US.yml b/src/main/resources/locales/en-US.yml
index 245f3c2..6339716 100755
--- a/src/main/resources/locales/en-US.yml
+++ b/src/main/resources/locales/en-US.yml
@@ -218,3 +218,5 @@ challenges:
     you-completed: You completed the [challenge] challenge!
     you-completed-level: Congratulations, you complete [level]!
     you-repeated: You repeated the [challenge] challenge!
+    missing-addon: It is not possible to complete challenge. Plugin or addon is missing.
+    incorrect: Current challenge is corupted.