{"action":"closed","issue":{"url":"https://api.github.com/repos/lenmus/lenmus/issues/50","repository_url":"https://api.github.com/repos/lenmus/lenmus","labels_url":"https://api.github.com/repos/lenmus/lenmus/issues/50/labels{/name}","comments_url":"https://api.github.com/repos/lenmus/lenmus/issues/50/comments","events_url":"https://api.github.com/repos/lenmus/lenmus/issues/50/events","html_url":"https://github.com/lenmus/lenmus/issues/50","id":166841424,"number":50,"title":"Some pngs don't display under NixOS","user":{"login":"RamKromberg","id":14829269,"avatar_url":"https://avatars.githubusercontent.com/u/14829269?v=3","gravatar_id":"","url":"https://api.github.com/users/RamKromberg","html_url":"https://github.com/RamKromberg","followers_url":"https://api.github.com/users/RamKromberg/followers","following_url":"https://api.github.com/users/RamKromberg/following{/other_user}","gists_url":"https://api.github.com/users/RamKromberg/gists{/gist_id}","starred_url":"https://api.github.com/users/RamKromberg/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/RamKromberg/subscriptions","organizations_url":"https://api.github.com/users/RamKromberg/orgs","repos_url":"https://api.github.com/users/RamKromberg/repos","events_url":"https://api.github.com/users/RamKromberg/events{/privacy}","received_events_url":"https://api.github.com/users/RamKromberg/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":6,"created_at":"2016-07-21T15:00:58Z","updated_at":"2016-07-26T18:05:03Z","closed_at":"2016-07-26T18:05:03Z","body":"I've recently [packaged lenmus in nixos](https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/misc/lenmus/default.nix) and noticed that some pngs fail to open and even throw exceptions.\r\nFor instance, when opening Music Reading Level 1, _cc-by-sa.png_ fails to open and the following error shows:\r\n```Line 0. Error loading image. Non-standard unknown exception```\r\nin the shell, the following also appears:\r\n```\r\n(lenmus:23951): Gtk-WARNING **: Unable to show 'Open the music books': Operation not supported\r\nNon-standard unknown exception (catch in ImageReader::load_image)\r\n```\r\n\r\nThe strange thing is that it only happens with some images: In the same book, under _The Tempo and Metronome_ page, the _metronome_image.png_ image loads fine.\r\n\r\nAnyhow, it's probably related to the package or some dependency. But I figured I'd report it just-in-case this is a known issue or something similar."}}
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