Mr Sid and ECW image format not recognized
When you open a drawing that contains Mr Sid or ECW images, you find only the image frame is displayed.
In addition, when you try to insert a Mr Sid or ECW image into a drawing using the_MAPIINSERT or _IMAGEATTACH commands, neither Mr Sid nor ECW is listed as a valid raster image format.
To be able to view and insert Mr Sid or ECW raster images in AutoCAD® Civil 3D® or AutoCAD® Map 3D with the _MAPIINSERT or the AutoCAD _IMAGEATTACH command, you need to download and install the AutoCAD Raster Design xxxx Object Enabler (where xxxx is the version of your product).
The object enablers for Autodesk products are available at the following website: