Love it but it keeps crashing!

Please fix this. Every time I make a dub and want to save it, the app crashes and the dub is not saved. I just lose it and have to make the same dub all over again. And its never as good as the first time. I really love this app but please fix the crashing problem. Other then that, keep up the good work!!

Its an app about Dubsmash - Videos & Music, v2.1.1