Blank page after update to 0.9.2.6

Warning: if you chmod .htaccess 777 expose your installation to be hacking! Safe chmod for .htaccess is 604 …

Yes, thanks sLa NGjl′s!

The plugin has a bug and need to do some manual corrections to install.
Once installed, it works great and the speed improvement pages. It seemed incredible.
Personally I would only recommend if you work with a CDN. Otherwise it is better to use another plugin to make it easier

I got it working again!
The only thing I did (which I do not recommend!) is,
-Uninstall WordPress
-Delete all wp related folders and files, plugins from the server (do not delete your previous active theme).
-Re-install WordPress
-Activated the previous active theme and voilá, back online!

The error only went away when I activated the previous active theme.

Maybe someone could use this information. I’m glad the error is gone!