D7 is fine on my local Ubuntu, but when I try to install it on a shared hosting environment where I have D6 installed w/o problems I get an error.

Error log says htaccess: regex could not be compiled

If I comment out the FilesMatch section or replace it with the D6 FilesMatch, I do not get the error. 

I get the same error/no error result even if I just place the .htaccess file in the www root without any other files in it.