StarTools

using this data post here
W10 64 GNU version
compose / wipe nwr/contrast / hdr reveal / decon conservative mask then select dyamnic sample small x... startools crashes closed after a while

I had not first clicked on a sample star

Thank you for reporting this! This should be fixed in the next release (1.7.418) coming soon.

1.7.419 includes some further stability fixes. Do let me know if you see any further instabilities!