There are multiple factors that can cause trouble when editing or opening a photo book. 

We kindly ask you to fill in our contact form with the following information:
1. What version of our creator tool are you working on?
2. When did you first start creating your photo book?
3. When did you last save your photo book?
4. Please describe step-by-step how the issue occurs. We would like to try and replicate the issue ourselves whenever possible, so please be as detailed as you can.
Examples: Where in the editor did this happen? What actions did you do right before the issue occurred? 5. Did you get an error message? If yes, please send the error message to us via the error message pop-up.
6. Attach a screenshot of the error message or status of the editor at the time of the issue.
7. Attach all log files as well (Where can I find the log files in the offline creator tool (Windows)?)

Not working on Windows? Find the same instructions for:
- Offline creator tool Mac 
- Online creator tool 
- App (smartphone and tablet)