404 – File or directory not found

I have two types of files on the same directory: .dwg and .stp

I used this code:
[MMFileList folder=”/../../xxx/yyy/zzz” format=”table” types=”dwg”/] – and it works fine

and this code:
[MMFileList folder=”/../../xxx/yyy/zzz” format=”table” types=”stp”/] – files are listed on website, but when I tried to download them – then 404 appears.

STP files are heavier, so I think that could be te problem – but why 404? As you can see on website, it looks like files don’t exist on server – which is not true.

Any ideas, where should I try to find a solution?

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