I'm not following this. JuiceboxBuilder-Pro 1.4.4.2. If by Images you mean the Images "tab" at the top, between Start and Customize, I don't see any reference to Titles on that screen, only Image Source, Add Images, Image Size, and Watermark. If I look on the Customize "tab", I can't find anything relevant either, not in Caption nor in Main Image.

Thanks,
Paul