We are currently looking into a fix for this problem, this issue is on line 12 of the permalinks_dispatcher.php file, which you can see here:

$REDIRECT_URL = coalesce(@$_SERVER['REDIRECT_URL'], @$_SERVER['SCRIPT_URL'], array_first(explode('?',$_SERVER['REQUEST_URI'])));


which needs changing to this:

$REDIRECT_URL = coalesce(@$_SERVER['SCRIPT_URL'], array_first(explode('?',$_SERVER['REQUEST_URI'])), @$_SERVER['REDIRECT_URL']);

This is because on some servers the variable $_SERVER['REDIRECT_URL'] doesn't contain the URL  that the page was redirected to, but the path to the current file. So permalinks_dispatcher file ends up looking for the incorrect file path in its database.

This issue should be resolved in the next release.

Let me know if you have any questions. 

Cheers

Greg

A recent issued popped up in that ALL pages linked by a Permalink are resulting in an 500 Internal Server Error.  

Any assistance would be appreciated.

Bob

I have bought and installed the Permalinks plugin and it is working perfectly - except I have a folder on my site the has restricted access by password using an .htaccess file.  Since installing Permalinks when I try to access this folder I am being redirected to the error 404 page.  If I remove the .htaccess file from the folder I can access no problem?   Any hints or tips to fixing the problem would be appreciated.

Thanks