"Cannot open input file" error

[valexv]

I'm not able to write disk images with the latest Mac build. I get this error with any image I try to open from the "write disk" button. I am able to open disk images for browsing the file system, but opening one for writing to a disk seems to be broken.

[davidgiven]

This is a known bug with the current GUI, being addressed by throwing it away and rewriting it from scratch --- it's a fundamental design issue. Sorry. You'll need to use the command line.