Dear Bruce,
Following the instructions you gave John Hayes, I tried installing this fix on both a windows XP and Windows 7 machine today.
Installing the PCA.pm file in the strawberry\perl\site\lib\Demeter folder seems to result in the crashing Athena when the pca tab is selected.
I initially replaced both PCA.pm files and crashed the program then replaced one at a time and it is this file which causes the crash.
Looking at github I see it was last changed yesterday I think, so suspect you may have altered it recently in a less than perfect manner.
Log file attached.
Thanks
Fred
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