Well I raised the maximum execution time to 200 seconds, the memory limit to 40 Meg and told the plugin to only include 5 posts. Again after clicking on rebuilding the sitemap I got a blank page and later on this error message:
* The last run didn't finish! Maybe you can raise the memory or time limit for PHP scripts. Learn more
* If you changed something on your server or blog, you should rebuild the sitemap manually.
* If you encounter any problems with the build process you can use the debug function to get more information.
So this time the posts weren’t the problem because it did not mention them anymore. Memory limit 0f 40M and time limit of 200 seconds should be enough don’t you think?
The debug page does not indicate errors only data on the configuration…