Please note that cfitsio has been updated twice on Cygwin and the library ABI changed from libcfitsio3 to libcfitsio7. The mentioned packages need a rebuild to link to the updated library.
Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ DIY Stuff: http://Synth.Stromeko.net/DIY.html