Repository Stack Error Messages

I Just installed the Repository Stack and am very thrilled by its functionality.

I have received the following error and ask if someone could assist with it’s interpretation:
Situation- I try to create a new directory with the name “Plans”. I get the following error: “Directory could not be created: Invalid Directory Given”

Situation - I try to upload PowerPoint or MP4 files and get “File was not found or could not be opened”. I specifically added these file extensions to the Whitelist. Any idea as to where the error lies?

Difficult to say. Are you able to add any directory or file, or is it limited to special ones?

At the end it is a PHP server error, and you have to check the PHP error logs.