Could not execute script

[a-vasyliev]

Hello, I could not work with iFrame... Here is debug info:
19:17:34.082 DEBUG - Try HttpContext[/wd,/wd],0
19:17:34.082 DEBUG - RestishHandler org.openqa.jetty.jetty.servlet.ServletHandler@7f516197
19:17:34.082 DEBUG - servlet=/hub/*=WebDriver remote server
19:17:34.082 DEBUG - session=null
19:17:34.083 INFO - Executing: [switch to frame: mellon] at URL: /session/a0b5c68f-f964-435d-9142-ff5b19e62de2/frame)
19:17:34.092 WARN - Exception thrown
com.opera.core.systems.scope.exceptions.ScopeException: Could not execute script
Build info: version: '2.40.0', revision: 'fbe29a9', time: '2014-02-19 20:54:28'
System info: host: '295-avasyliev', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.11.0-12-generic', java.version: '1.7.0_51'
Driver info: driver.version: unknown
at com.opera.core.systems.scope.stp.services.ScopeEcmascriptService.parseEvalReply(ScopeEcmascriptService.java:371)
at com.opera.core.systems.scope.stp.services.ScopeEcmascriptService.executeScript(ScopeEcmascriptService.java:290)
at com.opera.core.systems.scope.stp.services.ScopeEcmascriptService.findNodeByName(ScopeEcmascriptService.java:495)
at com.opera.core.systems.scope.stp.services.ScopeEcmascriptService.changeRuntime(ScopeEcmascriptService.java:461)
at com.opera.core.systems.OperaDriver$OperaTargetLocator.frame(OperaDriver.java:681)
at org.openqa.selenium.support.events.EventFiringWebDriver$EventFiringTargetLocator.frame(EventFiringWebDriver.java:577)
at org.openqa.selenium.remote.server.handler.SwitchToFrame.call(SwitchToFrame.java:51)
at org.openqa.selenium.remote.server.handler.SwitchToFrame.call(SwitchToFrame.java:1)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:170)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
19:17:34.093 WARN - Exception: Could not execute script
Build info: version: '2.40.0', revision: 'fbe29a9', time: '2014-02-19 20:54:28'
System info: host: '295-avasyliev', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.11.0-12-generic', java.version: '1.7.0_51'
Driver info: driver.version: unknown
19:17:34.100 DEBUG - Handled by org.openqa.jetty.jetty.servlet.ServletHandler@7f516197
19:17:34.100 DEBUG - new HttpConnection: Socket[addr=/127.0.0.1,port=54785,localport=4444]
19:17:34.100 DEBUG - RESPONSE:
HTTP/1.1 500 Internal Server Error
Date: Fri, 07 Mar 2014 17:17:34 GMT
Server: Jetty/5.1.x (Linux/3.11.0-12-generic amd64 java/1.7.0_51
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Cache-Control: no-cache
Content-Type: application/json;charset=UTF-8
Content-Length: 4230

Can you help me?