Well, in an attempt to update my S:P installation I have succeeded in making ALL OF my posts disappear.

When I’m at the upper level of a forum, I can see the list of topics, and when I mouse over the “go to the last post” arrow, a little yellow box pops up, showing that this post DOES exist (see image):

However, when I click to read the actual post, NOTHING appears in the post box:

Help! My users cannot read or reply to any of the topics, which is obviously a pretty big problem… 🙁

Thanks for your help.