LR 4.1 RC. Can not upload to Flickr since upgrade to 4.1 RC
I get the error message "An Internal Error has occurred: Invalid at the top level of the document" when publishing a new photograph to an existing collection. This worked fine for me previously with version 3.6 and version 4.0.
Sorry please ignore this as the issue has already been raised in the topic "Lightroom: LR 4.1 RC, Flickr publishing broken" by Chris Bope. As reported creating a new flickr service can be used to work around the problem until the the full release of 4.1 arrives.