If you see a CoderModulesPath error, it might be because the file type that you are trying to transform has not been added to the DELEGATES list for ImageMagick. To check which delegates are supported, run this command from the ImageMagick installation directory:
convert -version
The delegates supported are listed in the results.
If you are using RAW image formats, you must install an ImageMagick delegate, for example, UFRaw.