In some cases, we may have to remove all files and folders associated with an application and then reinstall. It is important to find ALL assocated files and folders as often the problem you are experiencing may be due to having multiple files and versions on your machine. Also, you may have contacted support to ask about uninstalling a program from your Mac.  The quickest most efficient way on your Mac is to use the Spotlight Tool which you can access at the upper right corner of your desktop. Just type the search criteria into the text field and a list will show. You can replace the name Snap Art in this article with the name of the software you are trying to remove. For example if you are removing Exposure 3, just search for Exposure 3 in the Spotlight menu.

 You can then choose "Show All" to open a finder window with all files and folders containing that name.

You can then highlight the files and folders with that name, right click or control click, and select "Move to Trash". After you empty the trash, all the files will be deleted and you can then reinstall.   You can ignore files that just have the program name in its metadata. The main things you are looking for are the folders located in your Photoshop plugins directory. 

Once you have completed these steps you will need to delete the binary file on your Mac, if your software has one. This is the file that contains the actual executable code for the software. You can use Finder to browse to these locations.

Bokeh 2 - MACINTOSH HD/Applications/Alien Skin Bokeh 2

Exposure 3 - MACINTOSH HD/Applications/Alien Skin Exposure 3