引用自 ☠Grim_Fandango666☠：

- I exported the scene as dmx - and put it into the sessions folder; Then when i tried to open it I got an error message "Document not opened because the file could not be read.". -

The Blender Source Tools plug-in doesn't export Source Filmmaker sessions. It exports mesh and animation files. (A DMX/SMD animation is not the same as a Source Filmmaker session.)

To use your custom model in Source Filmmaker, you have to write a QC file that references/loads the DMX file and sets some other options, and then compile that into a Source model.


The probably-most-comprehensive guide on this subject can be found here:
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=245723825 Note that while it appears very long at first glance, that's simply because that it covers a lot of things, many of which you can easily skip over, and it also goes into detail on everything, to help guide you along the way as much as possible.
(Also note that this guide was last updated in 2018, so it may be a bit outdated, but hopefully you can figure out what has changed how in Blender and the Blender Source Tools since then.)

You may also be able to google "Your First Source Model" or such to maybe find a simpler guide on converting your DMX mesh into a Source model, however that might not cover some of the things that you want to do with your model.