Switching forum style does not work blank page

[snobbytec]

I have the problem that the quick forum style chooser does not work when vbSEO plugin is on. With vbSEO off it does work.

I get a blank page when the url is forum/index.php?styleid=xyz or /forum/?styleid=xyz

So I used the good old telnet and found:

Escape character is '^]'.
GET /forum/index.php?styleid=40 HTTP/1.0

HTTP/1.1 301 Moved Permanently
Date: Sat, 27 Jun 2009 20:40:38 GMT
Server: Apache
Location: http:///forum/index.php
Vary: Accept-Encoding,User-Agent
Content-Length: 0
Connection: close
Content-Type: text/html; charset=ISO-8859-1

So it looks like the redirect URL is wrong.

On my development server the same stuff with a copy of the site does work (all settings are the same). I checked htaccess, which is correct.

Only difference:
Real Server: Debian 4 with Apache 2.2.3 and PHP 5.2.0
Dev Server: OS X 10.5 with Apache 2.2.9 and PHP 5.2.6
Both are set up to use mod_php. Memory Limit is > 128 MB on both.

vBulletin is 3.8.0 and vbSEO 3.3.0.

I have really no idea why I get a blank page.

[Oleg Ignatiuk]

Hello,

do you have complete URL including domain name defined in vB admincp options as forums URL?

[snobbytec]

Hi Oleg. I checked already that setting.

It was http://www.example.com/forum

I changed it to /forum only. Then it works.

The odd thing is that on my dev box the url is still set to http://www.example.com/forum and it works. I don't know where the difference is.

[snobbytec]

Update: No that is not the solution.
After altering URL to /forum vbSEO says unregistered. And then it is off and the style switching works, the same as disabling the plugin.

So problem is not solved.

[Mert Gökçeimam]

Please create a support ticket with ftp , admincp and vBSEO Cp access so we can check.

[snobbytec]

Thanks, I fixed it. It was a addon block in vbadvanced that I don't have on my dev server yet.

After disabling this block it works again. It seems that the variables are overriden, really ugly.

So thank you for your help.