The “!” is not a Prezi error message but an Adobe Flash error pop-up that occurs when the contents of your presentation are too big for your computer to handle.
- reducing the size or removing some of the media files in your presentation. Optimal resolution for images is 1024x1024 pixels in Prezi, and the maximum recommended size is 2880x2880 pixels.
- closing other tabs and programs that are not essential to the work you are doing (especially other presentations you may have open).
- switching browsers: Google Chrome or Mozilla Firefox is recommended for best performance.
*Note: Every time you add an image that is bigger than the optimal resolution for Prezi, you’ll get a pop-up message suggesting you to resize the image. In the future, please always click Resize.