I am new to xLights and trying to learn the software. I watched the introduction video and it was very informative. I created a test program to "play" with the software and learn what all the effects will do. I went through Setup and Layout, now I am in Sequencer. Every time I click on any of Effects buttons I get an error message, Drag & drop operation failed. Not sure what I am doing wrong but I am sure it is something simple. Any suggestions would be appreciated.