I just updated to version 2.49a, and now I, when changing directories, I cannot simply double-click on a folder to open it. I have to click on the folder and then push the Select Folder button. This is a very minor annoyance in a fabulous application that I use all the time, but I liked the old way better. (Again, fabulous program!)
Do you mean this special tool configuration?
Try to add it back if it's been lost somehow.