diff --git a/libs/core.js b/libs/core.js
index 896989e1..5e699f9f 100644
--- a/libs/core.js
+++ b/libs/core.js
@@ -203,6 +203,11 @@ core.prototype.init = function (coreData, callback) {
     document.getElementById("startLogo").innerHTML = core.firstData.title;
     core.material.items = core.clone(core.items.getItems());
     core.material.enemys = core.clone(core.enemys.getEnemys());
+    if (main.mode == 'play') {
+        for (var enemyId in core.material.enemys) {
+            core.material.enemys[enemyId].id = enemyId;
+        }
+    }
     core.material.icons = core.icons.getIcons();
     core.material.events = core.events.getEvents();
 
diff --git a/libs/maps.js b/libs/maps.js
index 859faee7..5a4e2382 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -466,6 +466,7 @@ maps.prototype.drawMap = function (mapName, callback) {
             }
         }
         images.forEach(function (t) {
+            if (typeof t == 'string') t = [0,0,t];
             var dx=parseInt(t[0]), dy=parseInt(t[1]), p=t[2];
             if (core.isset(dx) && core.isset(dy) &&
                 !core.hasFlag("floorimg_"+mapName+"_"+dx+"_"+dy) &&
diff --git a/libs/ui.js b/libs/ui.js
index 0bec6669..fcaf5936 100644
--- a/libs/ui.js
+++ b/libs/ui.js
@@ -2124,6 +2124,7 @@ ui.prototype.drawThumbnail = function(floorId, canvas, blocks, x, y, size, cente
         }
     }
     images.forEach(function (t) {
+        if (typeof t == 'string') t = [0,0,t];
         var dx=parseInt(t[0]), dy=parseInt(t[1]), p=t[2];
         if (core.isset(dx) && core.isset(dy) &&
             !core.hasFlag("floorimg_"+floorId+"_"+dx+"_"+dy) &&