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?".
The error isn't caused by that filename. It's because windows also has a convert command which is what is complaining about that file.
One way around this is to find the IM convert.exe file and rename it to, for example, imconvert.exe.