This is probably really simple but I don't know what I have changed, or how.
Basically, hitting render from within FormZ for any particular scene creates a folder. Last week when I was hitting render the folder would have it in it PNG, MXI and MXS files. Upon hitting stop a PNG file would be automatically created within the folder and if I closed maxwell and opened the MXI file at a later date the render would still be there so I could change the Iso and shutter etc, to tweak the image.
However, if I hit render today I will get the folder but it only contains an MXS file and no PNG or MXI file. Even when I hit stop a PNG is not automatically created anymore, if I close the file and re-open I will need to re-render the scene, I don't get the MXI file that has the render in it.
Whats happened? Any ideas? (See screen shot, top folder from last week, bottom from today)