Riffer crashing when reducing pitch range to one note

I’m using Riffer in Ableton.
When I reduce the pitch range to one note on all four (R1-R4) Riffers for example to C3.
Turn infinity random on.
As soon as I change any pitch of Riffers (R1-R4) for example R2 to C#3 Riffer immediately freezes and crashes every single time.
Is this a common problem?
Is there a solution?

Hello JCon,

Sorry to hear that. Which is your OS version and DAW version?
Do you perhaps have a crash log that you can share with us? If so, you can send it to us here: https://audiomodern.zendesk.com/hc/en-us/requests/new

Any suggestions or advice?