diff --git a/src/ACadSharp/Entities/Insert.cs b/src/ACadSharp/Entities/Insert.cs
index 441e9c4f..c08630e2 100644
--- a/src/ACadSharp/Entities/Insert.cs
+++ b/src/ACadSharp/Entities/Insert.cs
@@ -185,7 +185,7 @@ public override CadObject Clone()
 		{
 			Insert clone = (Insert)base.Clone();
 
-			clone.Block = (BlockRecord)this.Block.Clone();
+			clone.Block = (BlockRecord)this.Block?.Clone();
 
 			clone.Attributes = new SeqendCollection<AttributeEntity>(clone);
 			foreach (var att in this.Attributes)
diff --git a/src/ACadSharp/Entities/TableEntity.cs b/src/ACadSharp/Entities/TableEntity.cs
index 4d1ce6f7..5b624c37 100644
--- a/src/ACadSharp/Entities/TableEntity.cs
+++ b/src/ACadSharp/Entities/TableEntity.cs
@@ -102,5 +102,17 @@ public Cell GetCell(int row, int column)
 		{
 			return this.Rows[row].Cells[column];
 		}
+
+		/// <inheritdoc/>
+		public override BoundingBox GetBoundingBox()
+		{
+			return BoundingBox.Null;
+		}
+
+		/// <inheritdoc/>
+		public override CadObject Clone()
+		{
+			return base.Clone();
+		}
 	}
 }