id summary reporter owner description type status priority milestone component version resolution keywords cc 10344 build-config.js invalid to rebuild Bert Hankes "I noticed a problem using build-config.js to rebuild ckeditor. I Always get an 'Invalid File' dialog: 'The uploaded file was invalid.' So rebuilding according to a previous version of CKEditor is not possible. Even with the content of the 'build-config.js' that is shown in the help e.g. https://github.com/ckeditor/ckeditor-dev/blob/master/dev/builder/build-config.js is not valid either! " Bug confirmed Normal Project : CKBuilder 4.1