Tails ISO directory name has ".iso" in it, confusing some software
Originally created by @vom on #16902 (Redmine)
For example, Virtualbox errors out as it thinks that the subdirectory itself is an iso image. The Virtualbox folks could probably do a better job validating that the target is a file and not a directory, but perhaps renaming the directory to Tails-x.xx-iso (use dash instead of dot) would save folks a bit of frustration.
Workaround is to simply rename the subdirectory.