In the Open File dialog, you can choose how your choices are treated in the "File type" pulldown menu item.  I'd recommend changing it from "all (ask type)" to "all (guess type)", so Chimera guesses the type instead of asking  you what type it is.

    HTH,

    Greg

On 7/23/2020 6:57 PM, Gong, Zhen wrote:

Hi,

 

When I click on “file”, then “open”, no matter what types of files I am opening, there would be a window asking me to “designate file type”. This window came up very recently on my Chimera 1.13. Then I updated to Chimera 1.14 but still have this problem. Does anyone know how to avoid this? Many many thanks.

 

Best,

Zhen