{"action":"opened","issue":{"url":"https://api.github.com/repos/Rdatatable/data.table/issues/1059","labels_url":"https://api.github.com/repos/Rdatatable/data.table/issues/1059/labels{/name}","comments_url":"https://api.github.com/repos/Rdatatable/data.table/issues/1059/comments","events_url":"https://api.github.com/repos/Rdatatable/data.table/issues/1059/events","html_url":"https://github.com/Rdatatable/data.table/issues/1059","id":59650632,"number":1059,"title":"melt crashes R in win x64 systems","user":{"login":"ChristK","id":5948569,"avatar_url":"https://avatars.githubusercontent.com/u/5948569?v=3","gravatar_id":"","url":"https://api.github.com/users/ChristK","html_url":"https://github.com/ChristK","followers_url":"https://api.github.com/users/ChristK/followers","following_url":"https://api.github.com/users/ChristK/following{/other_user}","gists_url":"https://api.github.com/users/ChristK/gists{/gist_id}","starred_url":"https://api.github.com/users/ChristK/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ChristK/subscriptions","organizations_url":"https://api.github.com/users/ChristK/orgs","repos_url":"https://api.github.com/users/ChristK/repos","events_url":"https://api.github.com/users/ChristK/events{/privacy}","received_events_url":"https://api.github.com/users/ChristK/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-03-03T14:42:40Z","updated_at":"2015-03-03T14:42:40Z","closed_at":null,"body":"I'm experiencing immediate crashes to desktop for even simplest operations involving melt in all my win x64 machines after the latest melt updates. In MacOSX and Linux everything works fine. I tried to reinstall data.table several times but doesn't solve my problem. Commit \"983c931b6eec96fe6aa52efefd1a1d6ea043074d\" works fine for me.\r\n\r\nThe following minimal example is copy and paste from the melt documentation\r\n\r\n````R\r\nset.seed(45)\r\nrequire(data.table) # Latest github version\r\nDT <- data.table(\r\n      i1 = c(1:5, NA), \r\n      i2 = c(NA,6,7,8,9,10), \r\n      f1 = factor(sample(c(letters[1:3], NA), 6, TRUE)), \r\n      f2 = factor(c(\"z\", \"a\", \"x\", \"c\", \"x\", \"x\"), ordered=TRUE), \r\n      c1 = sample(c(letters[1:3], NA), 6, TRUE), \r\n      d1 = as.Date(c(1:3,NA,4:5), origin=\"2013-09-01\"), \r\n      d2 = as.Date(6:1, origin=\"2012-01-01\"))\r\n# add a couple of list cols\r\nDT[, l1 := DT[, list(c=list(rep(i1, sample(5,1)))), by = i1]$c]\r\nDT[, l2 := DT[, list(c=list(rep(c1, sample(5,1)))), by = i1]$c]\r\n\r\n# id, measure as character/integer/numeric vectors\r\nmelt(DT, id=1:2, measure=\"f1\")  ## Crashes R to desktop\r\n````\r\nIs anybody else experiencing this behaviour in Windows or is it something with the way I setup all my win systems?\r\n\r\n````R\r\nsessionInfo()\r\n#R version 3.1.2 (2014-10-31)\r\n#Platform: x86_64-w64-mingw32/x64 (64-bit)\r\n\r\n#locale:\r\n#[1] LC_COLLATE=English_United Kingdom.1252 \r\n#[2] LC_CTYPE=English_United Kingdom.1252   \r\n#[3] LC_MONETARY=English_United Kingdom.1252\r\n#[4] LC_NUMERIC=C                           \r\n#[5] LC_TIME=English_United Kingdom.1252    \r\n\r\n#attached base packages:\r\n#[1] stats     graphics  grDevices utils     datasets  methods  \r\n#[7] base     \r\n\r\n#other attached packages:\r\n#[1] data.table_1.9.5\r\n\r\n#loaded via a namespace (and not attached):\r\n#[1] chron_2.3-45 tools_3.1.2 \r\n````"}}