Hello @tourette95
The error "Line 23: Undefined function or variable 'DEF'" does happen when no pipeline (i.e. no MEM type among: 'cMEM', 'wMEM', or 'rMEM') has been selected.
Normally, an options panel specific to BEst should open allowing you to first select the pipeline and then several other options (specific to that pipeline).
It seems that you are able to get through this normal chain of actions by right-clicking directly on the file to process, great.
However, you do experience some issues when dragging the file to process in the Process1 tab.
This means that the options panel did not open (for some reasons that I am investigating now).
Meanwhile, you should be able to still call BEst without issues by selecting the process "Compute sources: BEst" instead of "Compute sources [20xx]".
Could you confirm?
Thanks
Hello @Francois
Apologies, I missed these notifications.