[TYPO3-timtab] single item not working after upgrade 3.8.1 -> 4.0.1

[Jordan van Bergen]

Hi All,

After upgrading typo3 v3.8.1 to v4.0.1 my single items using TIMTAB aren't 
working anymore.

You can check it out on http://www.jordanvanbergen.nl.
Click the first item on top and see what will happen. The single item view 
only shows:

###BLOG_TITLE###
###BLOG_TAGLINE###

###POST_SINGLE###

Before, with v3.8.1 it was working. Everything else from the TIMTAB 
extension is working.

I use the following:
----------------------------------
typo3 v4.0.1
timtab 0.5.10
ve_guestbook 1.12.1
realurl 1.1.0
jb_realurl_regeneration 1.0.0

Any ideas/suggestions what could be wrong after the upgrade to v4.0.1 so the 
single item is only showing ###POST_SINGLE###?

Regards
Jordan