eDrawings (.edrw) are created for publishing and sharing purposes by SolidWorks users and typically they cannot be exported to any other CAD format. If you need to export your SolidWorks files, you need to use the source (.sldprt, .sldasm etc.) in order to save it in IGES format. This only export the geometry though, if you want to export whole 3D model you have to pick another format.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.