Directory Opus creates a new tab for every folder


i've just downloaded the most version of Directory Opus and i have the following problem:

every time i navigate to a new folder it creates a new tab on the bottom of the lister (a new tab on every folder browsing):

This is a result of browsing a folder from the C:\Program Files\...
I've tried to reset all preferences but it didnt help. "Back" button is also unavailable, only "Go up" button works.

Thanks in advance.

Try tapping both of your Alt keys, it sounds like one of them is stuck down (or Windows thinks it is; tapping it while in Opus should make Windows realise the key is up).

It's also possible that your Left Double-Click event for All Folders is messed up, but you'd probably remember if you had messed with that: