A few years ago I did a website for a client using ExpressionEngine 1.6.x. Everything worked fine until recently. Now the site is completely blank, including the admin page. I have no idea what happened, I haven’t been involved in managing the website since I completed it, and they also have no idea what went wrong.
The question is, where do I start debugging this issue? I was thinking about upgrading the website to 1.7.2 as a first step (I think it’s 1.6.8 now).
Thanks!