When styles files are stored in a folder called Styles, as C:\Program Files\BB\Styles, and if you want to make an hybrid style, you cannot choose a style in the style picker because the required style are not founds by Hybrid style wizard.You have to use the command 'choose' but in this case, you can't choose very precisely because you have no longer information about the styles.
Proposal : In Preferences, an option should indicate if styles are stored in Styles folder or inside BB folder to indicate to Hybrid Wizard where to go to fetch the styles.

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Reach for excellence

Reach for excellence