MELON not recognized as block for Break or Place
Doesn't look like MELON is being recognized as a proper block type on 1.13.

[Jobs] Job Farmer has an invalid Break type property: MELON! Material must be a block!
[Jobs] Job Farmer has an invalid Place type property: MELON! Material must be a block!

On 1.12 and earlier versions, MELON referred to the melon slice, and MELON_BLOCK was the block.  This is no longer the case for 1.13, as it is MELON for the block, and MELON_SLICE for the slice. 

diff --git a/src/main/java/com/gamingmesh/jobs/CMILib/ItemManager.java b/src/main/java/com/gamingmesh/jobs/CMILib/ItemManager.java
index 9073accc..60b4a211 100644
--- a/src/main/java/com/gamingmesh/jobs/CMILib/ItemManager.java
+++ b/src/main/java/com/gamingmesh/jobs/CMILib/ItemManager.java
@@ -1089,7 +1089,7 @@ public class ItemManager {
 	MAP(395, 0, 21655, "Empty Map", "EMPTY_MAP"),
 	MELON(103, 0, 25172, "Melon", "Melon_Block"),
 	MELON_SEEDS(362, 0, 18340, "Melon Seeds", ""),
-	MELON_SLICE(360, 0, 5347, "Melon", "Melon Slice"),
+	MELON_SLICE(360, 0, 5347, "Melon Slice", ""),
 	MELON_STEM(105, 0, 8247, "Melon Stem", "MELON_STEM"),
 	MILK_BUCKET(335, 0, 9680, "Milk Bucket", ""),
 	MINECART(328, 0, 14352, "Minecart", ""),

['src/main/java/com/gamingmesh/jobs/CMILib/ItemManager.java']