If your publication contains a text box with rotated text and the publication is sent as an e-mail message, the text will be exported as an image. The image quality will be low and the image will add to the file size of the e-mail message.
The object is one of the following:
A text box
A clip art or picture
To find and select the item, click the error message in the Design Checker task pane, click the arrow, and then click Go to this Item.
To fix this problem, return the text to horizontal.
Select the text box.
On the Arrange menu, point to Rotate or Flip, and then click one of the options to make the text horizontal.