Oh wait... Now they're working! :D Thank you!!! (sorry about that)

They were originally blank before I opened one with blender...

It seems to be right here: 124846

Thank you, it worked!

The Blender symbol is still exists. Does that affect the .smd files in any way?

I've been having this issue with .smd files, where, I want to open them with "Unknown Application" again. Once, I tried to open an .smd file with Blender, but now all of these kinds of files open...