[magick-users] Image channel value is 65535.5

[duc.sequere.aut.de.via.decede at imagemagick.org]

> channel value 65535.5, and the original is 65535.

Do you have HDRI enabled in your ImageMagick build?  If so, values can 
exceed the QuantumRange.  If not, can you post a program we can download,
compile, and run that shows the problem so we can investigate.