Hoster 5.0.6 die on me in my show

[chatrobot]

I purchased my laptop and hoster software from MTU in May last year. It has been working good since.
Last weekend I upgrade to 5.0.6 from 5.0.5.02 and everything seems to be working fine UNTIL......
Last night (Thursday) I ran my show, Hoster lost audio after first song was played. I checked and verified the computer is working fine as I can still paly music using virtual DJ and sound is coming out. It is just in Hoster the song is played (the lyrics is running) but no sound.

I have to cancel the show eventually. I lost meony and suffered embrassement. I submitted ticket to support and post my question in 5.0.6 bug report forum but I did not receive any feedback so far (right now it is Friday morning 11am EST)
I ahve two more shows this weekend. One on Saturday night and one on Sunday. I cannot afford cancelling more shows this week.

Can I get some help and support ASAP?
Thanks