PS1 .cue wont import?

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I'm trying to import my playstation 1 .cue files and I'm getting a strange error.

I search for files *.cue, select them all, next, go thru all the menus fine, last menu shows all .cue I selected, next, Loading bigbox shows up down the bottoms then nothing. No games imported, no message, nothing.

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Changed the rom directory folder name from PSX to PS1 and now it works?