Hey all - this is Erick from Photocrati. I just wanted to jump in and respond to the questions from some of you about "if not templates, then what."
First, I just want to reassure you that when we say we're deprecating templates, it doesn't mean we're going to stop supporting them. Given how popular templates are in the NextGEN ecosystem, I just don't see how we could ever consider that. So our intent is to continue to support the template functionality exactly as it exists now to ensure full backwards compatibility, and compatibility with templates going forward.
At the same time, we're not going to be investing time to improve or refine the template system. And we are going to be working improving and developing the "module" system that defines much of the logic of NextGEN 2.0. Right now, you can add new gallery types to NG 2.0 using modules and this system is more powerful and flexible. But right now, it's also more complicated than adding a template. So we need to refine the functionality and documentation to make it easier to add new gallery types via modules. We'll know we've done a good job with that when people start using it.
Until then, you are welcome to continue using templates with the knowledge that we're going to continue to support them.
Given everything I've said above, your current templates should be working and most templates are working. If they are not, that's an issue or bug we need to address. The best thing you can do is submit a bug report with login credentials. We'd need to see your template and understand why it's not loading correctly.