I have two questions: 

1- I was trying to run the program Acorn, on a SAD dataset (Se derivative) that was scaled in scalepack/HKL2000. converted to .mtz using scalepack2mtz, then edited in REVISE and Ecalc. But when I ran Acorn it gives me the error message "Segmentation fault".

Does anyone know what is going on?

2- The same dataset I ran on CRANK in an attempt to calculate a substructure and the program stopped with an error message: "not enough clear peaks in the patterson function" eventhough xtriage suggests I have a an anomalous signal until 5.1A. Does this mean the anomalous signal is so weak for CRANK to detect?

Thank you,

Maher