IMPORTANT! PLEASE READ!
I am writing to let you know I have recently uncovered a bug in FSFAST. While I don't expect the bug to have widespread effects, the places where it does have an effect could be serious.
I have set up the following web page to document the bug and help track what is being done to asses its impact and to fix it:
surfer.nmr.mgh.harvard.edu/fswiki/FsFastGuiBug
The bug has to do with contrasts configured with the mkanalysis Graphical User Interface (GUI). The bug is particularly bad for unbalanced contrasts, eg, comparing A to the AVERAGE of B and C. The contrast actually would compare A to the SUM of B and C.
Please read the above wiki page for more details.
If you have not used the GUI, then you are unaffected.
I am currently developing tools to detect and fix these errors.
If you are (or think you might) affected by this bug, please email me as I'd like to know exactly how widespread the problems really are.
Finally, I apologize for the inconvenience that this will cause.
doug
ps. Thanks to Amitai Shenhav and Moshe Bar for bringing this to my attention.