Prevent all strings from being parsed as JSON.

src/config.ts

@@ -84,7 +84,6 @@ class SBMap<T, U> extends Map {
     }
 }
 
-
 var Config: SBObject = {
     /**
      * Callback function when an option is updated
@@ -151,10 +150,14 @@ function decodeStoredItem(id: string, data) {
 
     // This is the old format for SBMap (a JSON string)
     if (typeof data === "string") {
+        try {	
             let str = JSON.parse(data);	   
 
             if (Array.isArray(data)) {
-            return new SBMap(id, str)
+                return new SBMap(id, str);
+            }
+        } catch(e) {
+            // Continue normally (out of this if statement)
         }
     }