error in merge

[gordonwoodhull]

Seems to be harmless in this case, but I got an error when merging some complex changes (including cell moves):

Error: update_notebook: Error in .gist.binary.process.outgoing(id, content) : 
  attempt to remove non-existing cell/asset: part9.R
R trace:
stop("attempt to remove non-existing cell/asset: ", paste(dn[!(has.txt | 
    has.b64)], collapse = ", "))
.gist.binary.process.outgoing(id, content)
fun(...)
  attempt to remove non-existing cell/asset: part9.R
    at success (https://rcloud-5.research.att.com/js/rcloud_bundle.js:32:23)
From previous event:
    at Object.update_notebookAsync (https://rcloud-5.research.att.com/js/rcloud_bundle.js:38:54)
    at Object.rcloud.update_notebook (https://rcloud-5.research.att.com/js/rcloud_bundle.js:467:30)
    at update_notebook (https://rcloud-5.research.att.com/js/rcloud_bundle.js:4544:34)
    at apply_changes_and_load (https://rcloud-5.research.att.com/js/rcloud_bundle.js:4564:13)
    at Object.merge_notebook (https://rcloud-5.research.att.com/js/rcloud_bundle.js:4844:20)
    at Object.merge_notebook (https://rcloud-5.research.att.com/shell_tab.js:260:41)
    at Object.merge_notebook (https://rcloud-5.research.att.com/editor_tab.js:415:26)
    at merger_model.applyMerge (https://rcloud-5.research.att.com/js/merger_bundle.js:613:16)
    at HTMLSpanElement.<anonymous> (https://rcloud-5.research.att.com/js/merger_bundle.js:738:21)
    at HTMLSpanElement.dispatch (https://rcloud-5.research.att.com/lib/js/jquery-2.1.1.js:4409:9)
    at HTMLSpanElement.elemData.handle (https://rcloud-5.research.att.com/lib/js/jquery-2.1.1.js:4095:28)