{"action":"opened","issue":{"url":"https://api.github.com/repos/ropensci/RSelenium/issues/50","labels_url":"https://api.github.com/repos/ropensci/RSelenium/issues/50/labels{/name}","comments_url":"https://api.github.com/repos/ropensci/RSelenium/issues/50/comments","events_url":"https://api.github.com/repos/ropensci/RSelenium/issues/50/events","html_url":"https://github.com/ropensci/RSelenium/issues/50","id":80221905,"number":50,"title":"Unknown IO error2: failed to load external entity in checkForServer()","user":{"login":"caijun","id":2522593,"avatar_url":"https://avatars.githubusercontent.com/u/2522593?v=3","gravatar_id":"","url":"https://api.github.com/users/caijun","html_url":"https://github.com/caijun","followers_url":"https://api.github.com/users/caijun/followers","following_url":"https://api.github.com/users/caijun/following{/other_user}","gists_url":"https://api.github.com/users/caijun/gists{/gist_id}","starred_url":"https://api.github.com/users/caijun/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/caijun/subscriptions","organizations_url":"https://api.github.com/users/caijun/orgs","repos_url":"https://api.github.com/users/caijun/repos","events_url":"https://api.github.com/users/caijun/events{/privacy}","received_events_url":"https://api.github.com/users/caijun/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-24T17:44:52Z","updated_at":"2015-05-24T17:44:52Z","closed_at":null,"body":"I am working in RStudio with following session infomation\r\n\r\n```\r\n> sessionInfo()\r\nR version 3.2.0 (2015-04-16)\r\nPlatform: x86_64-apple-darwin13.4.0 (64-bit)\r\nRunning under: OS X 10.10.3 (Yosemite)\r\n\r\nlocale:\r\n[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8\r\n\r\nattached base packages:\r\n[1] stats     graphics  grDevices utils     datasets  methods   base     \r\n\r\nloaded via a namespace (and not attached):\r\n[1] tools_3.2.0\r\n```\r\n\r\nWhen running `checkForServer()`, I got the following error\r\n\r\n```\r\n> library(\"RSelenium\")\r\nLoading required package: RCurl\r\nLoading required package: bitops\r\nLoading required package: RJSONIO\r\nLoading required package: XML\r\n> checkForServer()\r\nUnknown IO errorfailed to load external entity \"http://selenium-release.storage.googleapis.com\"\r\nError: 1: Unknown IO error2: failed to load external entity \"http://selenium-release.storage.googleapis.com\"\r\n``` \r\n\r\nI google the error and find that it's probably caused by `libxml2`, on which the `xmlTreeParse()`, `htmlTreeParse()` and `xmlEventParse()` functions are built."}}