Cannot Save or Update Scrollsequence

Question: 

I cannot press Save or Update Scrollsequence, what is the problem? 

Answer: 

The fact that the save and update buttons are disabled is because there are required values missing. For example, when you create a new scene, you have to add images and set the image duration for each scene. If this information is missing, the buttons will be disabled. 

To make them work, simply ensure all required fields are valid. 

This condition may also be related to max_input_vars, please see

Cannot save more than a limited number of images to Scrollsequence.