Question

Every since we upgraded to Beijing we've been sporadically having a very strange problem occur, which now seems to be substantially increasing in frequency and thoroughly frustrating folks.

Occassionally when people click "Preview Changes" we get a bizarre preview page that is a weird combination of the registration page and the page being edited. It's really hard to describe, so I've attached a screen shot of one of these preview pages below.

People are getting pretty frustrated, and it's actually caused us to lose some good work, so any feedback would be greatly appreciated.

• TWiki version: Beijing
• Perl version: 5.8.0
• Web server & version: Apache
• Server OS: Debian Linux
• Web browser & version: Mozilla 1.3
• Client OS: Linux, Mac OS X

-- NicMcPhee - 19 Mar 2003

Answer

This is really odd, I have never seen that. In case you have mod_perl, does tuning it off solve the problem? In the view script, try also to dump the page content at different rendering stages to the debug.txt file. For example, use statements like:

TWiki::writeDebug( "======before xyz: $text" );

See also TWikiDebugging

-- PeterThoeny - 21 Mar 2003

Try setting the browser not to use HTTP 1.1 or keepalives - from the screenshot, it looks like you are getting two pages in a single HTTP 1.1 'keepalive' session, but the browser is unable to cope with this. Also, try different browsers, and try with and without proxies if possible. Mozilla 1.3 is pretty new, earlier Mozilla versions are worth trying as well.

-- RichardDonkin - 24 Mar 2003