When you go to Channel Outputs you don't have a selected row. The Clone String option is shown but won't work. There isn't a response, pop up or any indication you need to select something before using this button.
My suggestion is to NOT show the button until a string is selected.
Related problem:
When testing on multiple controllers Kulp k8 and K32 the number of times to clone the string is odd? I picked string 1 and when asked it offers to clone is 63 times on a 32?

When you go to Channel Outputs you don't have a selected row. The Clone String option is shown but won't work. There isn't a response, pop up or any indication you need to select something before using this button.
My suggestion is to NOT show the button until a string is selected.
Related problem:
When testing on multiple controllers Kulp k8 and K32 the number of times to clone the string is odd? I picked string 1 and when asked it offers to clone is 63 times on a 32?