ADUA1701 No Sound sigmastudio

Basically i'm having a strange thing where, when i add certain somponents in and download it. it just stops producing sound. For example, if i use double presicion crossovers rather than single. Or in this project displayed, everything was running perfectly until i decided to add the compressors in, and then again, it just stopped playing any sound what so ever. the download seems to of been successful and i can't imagine i've used up all the storage with a program of this size. I've tried to find other people experiencing the same issues, but no one has seemed to. I'm stumped, maybe i'm missing something obvious. Thank you for any advice in advance.