{"action":"opened","issue":{"url":"https://api.github.com/repos/webdriverio/webdriverio/issues/493","labels_url":"https://api.github.com/repos/webdriverio/webdriverio/issues/493/labels{/name}","comments_url":"https://api.github.com/repos/webdriverio/webdriverio/issues/493/comments","events_url":"https://api.github.com/repos/webdriverio/webdriverio/issues/493/events","html_url":"https://github.com/webdriverio/webdriverio/issues/493","id":66847390,"number":493,"title":"Random error about 1-5 tests","user":{"login":"grofit","id":927201,"avatar_url":"https://avatars.githubusercontent.com/u/927201?v=3","gravatar_id":"","url":"https://api.github.com/users/grofit","html_url":"https://github.com/grofit","followers_url":"https://api.github.com/users/grofit/followers","following_url":"https://api.github.com/users/grofit/following{/other_user}","gists_url":"https://api.github.com/users/grofit/gists{/gist_id}","starred_url":"https://api.github.com/users/grofit/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/grofit/subscriptions","organizations_url":"https://api.github.com/users/grofit/orgs","repos_url":"https://api.github.com/users/grofit/repos","events_url":"https://api.github.com/users/grofit/events{/privacy}","received_events_url":"https://api.github.com/users/grofit/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-04-07T10:22:35Z","updated_at":"2015-04-07T10:22:35Z","closed_at":null,"body":"For some reason I get a weird error which stops execution about once in every 5 tests I run, where the error:\r\n\r\n```\r\nC:\\Code\\Web\\<some-project>\\node_modules\\webdriverio\\lib\\utils\\PromiseHandler.js:154\r\n                throw error;\r\n                      ^\r\nRuntimeError: RuntimeError\r\n     (UnknownError:13) An unknown server-side error occurred while processing the command.\r\n     Problem: POST /session//url\r\nBuild info: version: '2.45.0', revision: '5017cb8', time: '2015-02-26 23:59:50'\r\nSystem info: host: 'somePcName', ip: '192.168.1.79', os.name: 'Windows 8.1', os.arch: 'x86', os.version: '6.3', java.version: '1.8.0_40'\r\nDriver info: driver.version: unknown\u001B[1;30m\r\n\r\n     Callstack:\r\n     -> url(\"http://localhost:3000/\")\r\n```\r\n\r\nI am running windows 8.1 pro and testing with firefox currently in Cucumber JS, my init and shutdown looks like:\r\n\r\n```\r\nvar setupBrowser = function() {\r\n    var browser = webdriverio.remote({\r\n        desiredCapabilities: {\r\n            \"browserName\": 'firefox',\r\n            \"acceptSslCerts\": true,\r\n            \"security.fileuri.strict_origin_policy\": false\r\n        }\r\n    });\r\n    browser.init();\r\n    return browser;\r\n};\r\n\r\nthis.Before(function (callback) {\r\n        var self = this;\r\n        // setup some other stuff\r\n        this.testData = {};\r\n\r\n        this.browser = setupBrowser();\r\n        this.browser.rootUrl = this.clientRoot;\r\n\r\n        this.clearAllData(function () {\r\n            callback();\r\n        });\r\n    });\r\n\r\nthis.After(function(callback){\r\n        this.browser.end();\r\n        callback();\r\n    });\r\n```\r\n\r\nThe selenium standalone output has no errors and just shows:\r\n\r\n```\r\n11:03:38.390 INFO - Done: [new session: Capabilities [{rotatable=true, acceptSslCerts=true, security.fileuri.strict_origin_policy=false, locationContextEnabled=true, browserName=firefox, ja\r\nvascriptEnabled=true, handlesAlerts=true, version=, platform=ANY, requestOrigins={name=webdriverio, version=2.4.5, url=http://webdriver.io}}]]\r\n```\r\n\r\nThen has nothing after it... I apologise for not having more information, but if you want me to do anything specific to yield better info I am more than happy to."}}