Post Tue Jan 03, 2017 1:28 pm

Blank page after submit comment

I moved my install to a new server, and updated the nameserver accordingly. I did this by downloading 4.1, installing it as a new system and then running the backup script generated by qdpm on the existing server. It shows data correctly except when I add a comment to a task, the comment is added but the page returns (after a bit of a wait) to a blank page with this url:
Same thing if I add a new task.
How can I fix this?