Argument is of an illegal type, when attempting to switchTo an iframe --------------------------------------------------------------------- Key: ARQGRA-269 URL: https://issues.jboss.org/browse/ARQGRA-269 Project: Arquillian Graphene Issue Type: Bug Components: core Affects Versions: 2.0.0.Alpha3 Environment: Windows 7 JDK 1.7U10 64-bit Drone 1.2.0Alpha Graphen 2.0.0.Alpha3 Reporter: Simon Knott Fix For: 2.0.0.Beta1 I am getting the following exception thrown when attempting to switchTo() an iframe: {code}java.lang.IllegalArgumentException: Argument is of an illegal type: $Proxy26 at org.openqa.selenium.remote.internal.WebElementToJsonConverter.apply(WebElementToJsonConverter.java:78) at org.openqa.selenium.remote.RemoteWebDriver$RemoteTargetLocator.frame(RemoteWebDriver.java:797) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.jboss.arquillian.graphene.proxy.GrapheneProxyHandler.invokeReal(GrapheneProxyHandler.java:209) at org.jboss.arquillian.graphene.proxy.GrapheneProxyHandler$1.invoke(GrapheneProxyHandler.java:140) at org.jboss.arquillian.graphene.proxy.GrapheneProxyHandler.invoke(GrapheneProxyHandler.java:170) at $Proxy27.frame(Unknown Source){code} The test code which is causing the exception looks like: {code}WebElement iframe = driver.findElement(By.tagName("iframe")); TargetLocator targetLocator = driver.switchTo(); targetLocator.frame(iframe);{code}