src/com/lishid/openinv/internal/v1_7_R4/PlayerDataManager.java

@@ -81,9 +81,12 @@ public class PlayerDataManager implements IPlayerDataManager {
         for (OfflinePlayer player : offlinePlayers) {
             String name = player.getName();
            
-            if (name.equalsIgnoreCase(search))
+            if (name == null){
+                continue;
+            }
+            if (name.equalsIgnoreCase(search)){
                 return player.getUniqueId();
-
+            }
             if (name.toLowerCase().startsWith(lowerSearch)) {
                 int curDelta = name.length() - lowerSearch.length();
                 if (curDelta < delta) {