Question Reply-to and create new topic showing blank page

No amount of "tweaking" your Joomla menu settings (even tried to install a later version of Kunena on your website, to no avail) worked.

There is some very peculiar SEF software running on your website that seems to be getting in the way.

I recommend uninstalling the SEF software and to use the basic Joomla SEO settings. See Search engine optimization (SEO)

thank you so much for the amount of time you spent on the case.
I uninstalled another component called SEF service MAP, but it didn't solved the issue.
Normally, we only use the standard Joomla SEF options associated with URL rewriting defined in htaccess, but on this site, we didn't turned it on, so I thaught SEF Service Map was the only one that might be involved...
After reading your message, I used our standard htacces and applied the recommanded settings for Joomla's SEO. Unfortunately didn't solved the issue either.
I check with the local administrator about other SEF software being installed and get back to the administration team through the forum

Hello,

I can take a look on site if you want.

Do you have checked if you have the display_error on your php.ini enabled ?
Do you have looked in php error log or apache log if you see some errors ?

Hello
Thanks a lot for your help proposal.
The issue is right now under investigation by sozzled and Matias. So, I guess it's better not to have too many people working on the same site on the same time.
I asked the person risponsible for the server for apache logs as sozzled asked me for (I hope to receive the logs pretty soon). We hope this will help us...

Sorry for the delay. Our system admin was away and I had no access to the apache logs. I now have access to them, so here you'll find, enclosed in confidentials tags the access-log for my last attempt to crate a new topic

I somehow have the feling that there is nothing after I click no "create new topic"...



Here is now the error-log. Just one favico error. I fixed it and nothing new is showing up now.



Hope this will help...

When you click on new topic, you should look at error logs right after it (second file).

You should see error in there, don't you?