Problem!

[Boatz]

I make a Text file, name it so and so.sm, and then the name comes out so and so.sm.txt.

This means it's still a text, and it thinks .sm is just part of the name? WTF??

[falcondude]

Yea. Select 'All files' for file type, then name it so and so.sm

[Boatz]

Worked like a charm, cheers.