OK, have now followed this through with 4 other sites and the extra .htaccess file was clearly the issue.
All working ok now – i’ll remember that for future reference.
OK, you will note that all now appears to be working fine.
What appears to have been the case (i’m assuming) is that there was an .htaccess file in the root of the htdocs folder, and there was another within the wp-contents/twentyeleven/ sub directory.
After i deleted the one within the sub-directory, all appears to be working ok again.
I think that is what has happened – your opinions are more than welcome on this solution as i try to replicate my .htaccess file to other sites currently running the twentyeleven theme.
Andrew
OK, thanks for your suggestions.
The CSS style sheet not being available certainly makes sense.
I’m guessing this is down to the effects of the .htaccessfile – as the 2011 style was fine until i introduced the .thaccess file that fixed the permalinks option not working.
I’ll go and have a look, follow your suggestions and see what happens.
Andrew