Enable the image format option for Illustrator assets

Quit Dreamweaver.

To open Registry Editor:

1. Click Start > Run. 
   
2. Type regedit in the Run dialog text box.
3. Click OK.

In the left panel of the Registry Editor, navigate to the following key: HKEY_CURRENT_USER\Software\Adobe\Dreamweaver [version number]\Feature Management

Set the value of AIAssetToSVGConversion to FALSE. 

Launch Dreamweaver, place the Illustrator assets and convert them to supported formats.

Quit Dreamweaver.

In the Finder, navigate to the location /[user]/Library/Preferences/ and open Adobe Dreamweaver [version number] Prefs file in any Text editor.

In the Preferences file, set the value of aiassettosvgconversion to FALSE.

Save the Preferences file.

Launch Dreamweaver, place the Illustrator assets and convert them to supported formats.