I'm using WordPress 2.7
I did a fresh install of WP Super Cache 0.8.6
<!-- Dynamic Page Served (once) in 5.340 seconds -->
<!-- Cached page generated by WP-Super-Cache on 2008-12-25 21:32:50 -->
<!-- Compression = gzip -->
However, every time I go to a different page, I receive the following:
Warning: preg_match(): Compilation failed: nothing to repeat at offset 0 in /home/content/X/J/C/XJCsPBKm2sxzC4/html/wordpress/wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 88
Warning: Cannot modify header information - headers already sent by (output started at /home/content/X/J/C/XJCsPBKm2sxzC4/html/wordpress/wp-content/plugins/wp-super-cache/wp-cache-phase2.php:88) in /home/content/X/J/C/XJCsPBKm2sxzC4/html/wordpress/wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 37
When I reload each page, the warning is gone. I have the plugin switched to "OFF" right now in the settings, since I have no idea what others see when it's on. I sure don't want everyone receiving the warning message above the header.
You may or may not be able to tell from the above, but WordPress is installed in a subdirectory and not at the HTML server root for my user. That used to matter with your plugin. I couldn't get it to work without, among other things, putting the .htaccess file at root and adding "/wordpress" before each URL. I didn't have to do that this time.
Anyway, I hope you can see the problem right off, because this exhausts my knowledge on the subject.
Oh lastly, this is GoDaddy, which also used to matter several versions ago.
Thanks! It's a good plugin but not for the faint-hearted. A willingness to learn was required, for me anyway.