Crash trying to switch alpha

Bug reports:
Nomad has been crashing every time I try and switch out the alpha on a brush. I tried closing the program and restarting/ Turning on and off iPad several times…still crashing when I tap on the brush alpha. Any help appreciated.

Any alpha? or just some of them?
You are on 1.78?

Thanks for the fast response… I did a long restart on the iPad and that seemed to do the trick. Nomad is back to normal. BTW, this is such a fantastic program…thank you