Trouble downloading a Standalone Sequence

[scottam67]

I'm trying to download a standalone animation sequence to a Showtime controller.  Initial sequence was 10 minutes long, but would only run first 8 seconds or so then restart.  I've created several sequences ranging in 10 seconds to 10 minutes thinking the sequence was too long.  At 10 seconds I know I am under 5,000 commands, so I don't know what else is causing this to not download and operate correctly.  Animation sequence is simply 16 channels for one unit. When I play from Sequence Editor, with the standalone sequence removed, the unit operates perfect.  

Any suggestions for what I may be doing wrong? 

Thanks