I haven't used a view facing shader for some time, so I don't know how or when this issue arose.
I have tried all the view facing shaders and every time I try to view the resulting geometry in the editor I get a message saying "Export failed - failed to find ????.ace file"
Firstly, I haven't used .ace files for years and even if I do create them I still get the same message.
A google search failed to find anyone else reporting this issue, so perhaps its something to do with my setup, but I can't see anything obvious.
Has anyone else found this issue or has a clue where I should start to look to resolve it?