Error changing page order

[RvdS]

After doing a major upgrade (moving from 1.5.1 to 1.9.3) I get the following error when I'm trying to change the order of the pages. The website consist of 10 pages. Changing the order I can only see 4 pages and then the error shows up.
That fourth page has a couple of subpages. But the second page also has subpages, no problems there, the show up in the change-order-tree...

Fatal error: Call to a member function Id() on a non-object in /home/xxxdomainxxx.nl/public_html/tmp/templates_c/%%A3^A36^A36F658E%%ordercontent_tree.tpl.php on line 7

It's so weird. It's driving me nuts. Everything else works fine.

Help... please...

[Dr.CSS]

Were any of your pages using content type news or Album, are you sure all the folders/files from the upgrade made it?...

[RvdS]

Thanks for the reply!

No news used on those pages. I do use the Album Module 0.9.3 on those pages. But the websites (and the Album Module in the backend) works fine. So I'm guessing all the files made it. Or? Should I install the Album Module again?