editor is not working in Postnote template frontend (joomla 1.6.3)

Hello,

Recently I made a website with GK Postnote (Joomla 1.6.3) and everything was checked and worked well. I haven't made any changes.
But suddenly you can't use the editor in the frontend anymore when he wants to change an article.
When he pushes on the "change article" icon there only appears a white screen nothing else. No error announcement.
When I activate another template the editor works good (Tiny mce). That's why I think it has something to do with Postnote template.
Is there someone who has had the same problem?
Regards, Marieka:(

please show me your www, and add me an joomla account to test this. works on my demo.

Thanks for your reaction.
The adress is:
http://www.formsbroker.nl
Here the editor doesn't work (at the start it did work properly) so I can't change anything.
(error http 500)
Articles which I wanted to change are after trying to change them locked in the Joomla article manager.
When I used a standard template the editor did work at first, but now this also doesn't work. Strange!
No I think it has something to do with the phpsettings of the server where the site is located.

I now linked the page to
http://www.okkerman.eu/FB3 where the editor of the same Joomla installation works perfectly. So according to me it finally hasn't got anything to do with the postnotetemplate. I haven't had this error before. Perhaps anyone is familiair with this problem?:angry:


Regards Marijke.

JCE have just released 1.6 2.0.0 RC1 which has fixed a number of issues for the main editor and some of the plugins.

how can I edit that article or something placed in the bottom? I mean "Vestibulum vitae ligula nec." thing!