I'm probably missing something really obvious here, but when I click 'Render to Disk' in Karma/Solaris, there doesn't appear to be any feedback whatsoever: no windows pops up showing progress, there's no command-line type output I can follow the rendering on, nothing. In fact, the only way I can know anything is happening at all is by opening the task manager and seeing if husk.exe is running and doing anything.

This is the kind of behaviour I would expect from a button saying 'Render to Disk in Background', but not from 'Render to Disk'. Is there an output log/progress bar that I need to enable somehow?

Hi!

Yes the progress bar doesn't appear for single frame renders, it appears for sequence renders. If you want to keep an eye to your render, you can enable the MPlay monitor on the USD Render ROP: