I ran skyline with mascot dat file, wiff file and wiff.scan file.
At the beginning the library is made by mascot dat file. And then wiff and wiff.scan files are loaded.
However skyline made unknown folders during making library.
The name is "yp54t7nrmjuxeyyhu2ogwtgz2q".
This folder contains cdb file, such as 1.dat. cdb.
Now we have 18 mascot dat files.
Some of them with large file size made dat. cdb files
Others with small file size didn't make dat. cdb files and analysis were worked well.
I attached the screen shots.