Icons now have a black background instead of being transparent

[Rebecca24557219m6ej]

Please help...

I have been using a particular set of icons (downloaded from adobe illustrator) for over a year (saved to my mac) and they have been great. I have them in various colours. However, when I now go to place one in my indesign document, they are no longer transparent but instead have a black background. They have always worked before, What's going on? 

I'm going crazy trying to figure it out!!

[rob day · Accepted solution]

Hi @Rebecca24557219m6ej , Make sure the icon’s container frame doesn’t have a Black fill. All placed objects are placed in a container, so there is the object and its parent frame, which could be filled with [None] or a color.