Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
We can fix the first problem by avoiding a namespace collision with NTTruncateFile(). With the second problem, try editing nt-base.h and wrapping the SSIZE_MAX define like this
The patch did not make it from the beta development to the release distribution. It will be in the next minor point release 6.3.0-2 Beta by tommorrow. Thanks.