diff --git a/src/geo/polygon.js b/src/geo/polygon.js
index 7a5d8c6e..48fdf98b 100644
--- a/src/geo/polygon.js
+++ b/src/geo/polygon.js
@@ -48,7 +48,7 @@
         this.depth = 0; // depth nested from top parent (density for support fill)
         this.delete = false; // for culling during tracing
         this.fillang = null; // hinted fill angle
-        this.fills = null; // fill lines (only used by supports currently)
+        this.fill = null; // fill lines (only used by supports currently)
         if (points) this.addPoints(points);
     }
 
diff --git a/src/kiri/codec.js b/src/kiri/codec.js
index ff7df8bc..1b032dd8 100644
--- a/src/kiri/codec.js
+++ b/src/kiri/codec.js
@@ -203,6 +203,13 @@
                     }
                 });
             }
+            if (d.cpath) {
+                d.cpath.forEach(rec => {
+                    if (rec.count === null) {
+                        rec.count = Infinity;
+                    }
+                });
+            }
             // console.log('<--',d);
         }
         return render;
diff --git a/src/kiri/init.js b/src/kiri/init.js
index 46b4d19d..7c668934 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -1944,7 +1944,9 @@
             }
             if (event && event.target.nodeName === "CANVAS") {
                 if (selection) {
-                    platform.select(selection.object.widget, event.shiftKey);
+                    if (selection.object.widget) {
+                        platform.select(selection.object.widget, event.shiftKey);
+                    }
                 } else {
                     platform.deselect();
                 }
diff --git a/src/kiri/main.js b/src/kiri/main.js
index 7519f271..aaf5fcff 100644
--- a/src/kiri/main.js
+++ b/src/kiri/main.js
@@ -992,6 +992,7 @@
         if (viewMode !== VIEWS.ARRANGE) return;
         forSelectedGroups(function (w) {
             w.rotate(x, y, z);
+            API.event.emit('widget.rotate', {widget: w, x, y, z});
         });
         updateSelectedBounds();
         platform.compute_max_z();
diff --git a/src/mode/fdm/client.js b/src/mode/fdm/client.js
index 0ea5fd47..7194fc72 100644
--- a/src/mode/fdm/client.js
+++ b/src/mode/fdm/client.js
@@ -70,27 +70,22 @@
         api.event.on("key.esc", () => {
             func.sdone()
         });
-        api.event.on("selection.rotate", rot => {
-            const {x, y, z} = rot;
+        api.event.on("widget.rotate", rot => {
+            const {widget, x, y, z} = rot;
             if (x || y) {
-                API.selection.widgets().forEach(widget => {
-                    clearWidgetSupports(widget);
-                });
-                API.conf.save();
+                clearWidgetSupports(widget);
             } else {
-                API.selection.widgets().forEach(widget => {
-                    let ann = API.widgets.annotate(widget.id);
-                    let sups = ann.support || [];
-                    sups.forEach(sup => {
-                        let wsup = widget.sups[sup.id];
-                        let vc = new THREE.Vector3(sup.x, sup.y, sup.z);
-                        let m4 = new THREE.Matrix4();
-                        m4 = m4.makeRotationFromEuler(new THREE.Euler(x || 0, y || 0, z || 0));
-                        vc.applyMatrix4(m4);
-                        wsup.box.position.x = wsup.x = sup.x = vc.x;
-                        wsup.box.position.y = wsup.y = sup.y = vc.y;
-                        wsup.box.position.z = wsup.z = sup.z = vc.z;
-                    });
+                let ann = API.widgets.annotate(widget.id);
+                let sups = ann.support || [];
+                sups.forEach(sup => {
+                    let wsup = widget.sups[sup.id];
+                    let vc = new THREE.Vector3(sup.x, sup.y, sup.z);
+                    let m4 = new THREE.Matrix4();
+                    m4 = m4.makeRotationFromEuler(new THREE.Euler(x || 0, y || 0, z || 0));
+                    vc.applyMatrix4(m4);
+                    wsup.box.position.x = wsup.x = sup.x = vc.x;
+                    wsup.box.position.y = wsup.y = sup.y = vc.y;
+                    wsup.box.position.z = wsup.z = sup.z = vc.z;
                 });
             }
         });
diff --git a/src/mode/sla/export.js b/src/mode/sla/export.js
index a26166bb..a1461877 100644
--- a/src/mode/sla/export.js
+++ b/src/mode/sla/export.js
@@ -462,6 +462,19 @@
         }
     }
 
+    // for unbound workers
+    // if (self.WASM) {
+    //     let {exports} = wasmInstance;
+    //     let heap = new Uint8Array(exports.memory.buffer);
+    //     self.wasm = {
+    //         heap,
+    //         memory: exports.memory,
+    //         // heap: wasmMemory,
+    //         // memory: memoryBytes,
+    //         render: exports.render,
+    //         rle_encode: exports.rle_encode
+    //     };
+    // } else
     // load renderer code in worker context only
     fetch('/wasm/kiri-sla.wasm')
         .then(response => response.arrayBuffer())