I downloaded and installed private download module but when I try and configure it under 'administer', 'site config', 'private download' and I enter my 'file system path' for/in htacces content I keep getting the error 'The RewriteBase path does not equal /system/files/private in htaccess content.'

I have tried various combinations but no luck. I do notice that the 'private' folder is being created but the htaccess is no being written out. Any suggestions appreciated.

Thank you ...Neil