Question redirect on reply or thank you

hi all
i'm running j1.5.24 and kunena 1.6.5 i have this issue: as i post a quick reply or a normal reply or a thank you, the page 1st redirects to a no css page looking like the screenshot , and than refreshes redirecting to the correct post page. Can this be solved?
thank you!

I'm sorry, K 1.6.5 is not supported any more. I recommend that you upgrade to K 1.7.1.

i have problems with k 1.7 series! can i uninstall kunena without loosing all my posts and categories, and make a fresh install without loosing datas? i guess i have problems with upgrade...
if i upgrade to k1.7 i won't be able to post anymore. i had to downgrade!

I'm sorry, there's not much else I can suggest to help in this case. You may have created a topic about why you have problems upgrading to K 1.7 - I haven't looked - and that's probably a better thing for us to discuss.

My only suggestion is that you read K 1.6 and K 1.7 Upgrade Guide

Yes, your issue has been fixed in K1.7.0.

You can uninstall Kunena from Joomla extension manager without loosing the data. Only way to loose data (database, attachments and avatars) is to uninstall Kunena from our installer. (DON'T DO THAT!).

Of course removing Kunena component from your site means that you also loose your menu and templates, but those are probably the reason why posting doesn't work in the first place.

Hi, I have a same problem with Joomla 1.5.64 and Kunena 1.6.4 for back and front end.
There is no solution ?