added to main thread

WVCheckMark.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "WVCheckMark"
-  s.version      = "1.0.6"
+  s.version      = "1.0.7"
   s.summary      = "Animated status indicators."
 
   # This description is used to generate tags and improve search results.

WVCheckMark.xcodeproj/xcuserdata/william.vabrinskas.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>WVCheckMark.xcscheme</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>

WVCheckMark/WVCheckMark.swift

@@ -147,10 +147,12 @@ open class WVCheckMark: UIView {
     }
 
     fileprivate func clear() {
-        if let t = self.layer.sublayers {
-            for l in t {
-                if l is CAShapeLayer {
-                    l.removeFromSuperlayer()
+        DispatchQueue.main.async {
+            if let t = self.layer.sublayers {
+                for l in t {
+                    if l is CAShapeLayer {
+                        l.removeFromSuperlayer()
+                    }
                 }
             }
         }