Check for updates to adobe air as well as for your graphic accelerator card device driver.

Close down and re-launch Poser.

Slide the vertical bar towards the right, so you can see the other broken icons to the right of each content name in the left section.

Click on a broken icon on the right of each content name (not to the left !).  That should refresh the icons for that content folder.  Depending on how large your library is, it may take a while to spawn the icons.

 

Eternal Hobbyist