Changing names?

[Barkers]

Dear Mr. or Mrs. Hakros:
One thing's been annoying me with this launcher, and it's that it sometimes changes the names of my wads and pk3s so that I can't reload my saves.
Why does it do that?

[Barkers]

I look at the thing, and it says I need these items, but if I look in the folder, there they are.
It's infuriating.

[hakros]

It seems a strange error.
I will check it for next version.
Greetings.