Case manager - Locked option: DD only

[GiadaVenturini]

Dear Amit and all,

I have an issue with the Case Manager, which does not allow me to make runs.
As you can see in the screenshot attached, the option "Create DD only" seems to be locked and cannot be un-ticked.
Did anyone experience this issue and knows how to solve it?

Thank you in advance,
Giada

[AKanudia]

this can happen if there is no GAM_Src folder