Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
Post a URL to a non-corrupt JPEG image and the ImageMagick command you claim is corrupting the image. We need to reproduce the problem before we can investigate further. The images you posted already have a black streak in them so we cannot use them for testing.