idolphin

I recently installed Debut having tried several video capture programs on my MAC OS X 10.10.5. Video glide was tested, and uninstalled manually (their uninstall program fails), but I am now left with a 'watermark' saying videoFX (that's part of Videoglide apparently) on any Debut captured video. Any suggestions on how to get rid of this? I have searched my computer for files/programs with either Videoglide or echoFX in the filename but there are none. Could it be a hidden driver, and if so how do I get rid of it? Thanks Ian