Paintstormstudio.com

It's a small thing, but it would save time if the software could recognize the back of the pen as an eraser instead of me having to change to the eraser tool every time I erase something really quick.

Did you try to enable back eraser at MENU-file-tablet settings-enable pen-revert eraser ?

There doesn't seem to be a "tablet settings" option under the file tab (I attached a screenshot of it), and I tried looking through the other options but none have anything on the pen. In the settings for the tablet itself it's set to erase, but for some reason it still paints in the program. I tried changing the setting of the back of the pen to the "e" key but it still would paint instead of erasing.

Oh, you're at the MAC OS, for MAC it's not supported, but we'll try to fix it.