I've seen videos on how all one has to do is press Ctrl + A to select an entire bunch of images to create/edit a movie in the VSE from images. However, that was in an older version then 2.77.
There has to be a better way to grab all of the images when adding strips/images in the video editing. I rendered 30 secs of video, taking 5 hours, and ending up with 900 images. When I went to add them all to the Add Image Strip section in the File Browser, Ctrl + A did not work. Selecting the first image then holding the shift button and clicking on the last image did not work, either.
Keying B for Box Select did not work properly because it does not drag through all of the images (it only selects the ones that you can see within the defined box).
Basically, what is the proper way to import all of the images at once into the video editor?
I can provide screenshots if you guys need them.

LMB can be used to select/deselect multiple files, one at a time.