Compilation failed wp-includes/class-wp.php on line 207

Hi.

We had been using WordPress for sometime without any problem. After the installation of SSL in only one of the pages the problem started happening. The error is:

Warning: preg_match() [function.preg-match]: Compilation failed: unmatched parentheses at offset 73 in /public_html/wp-includes/class-wp.php on line 207

I have tried to disable and enable all plugins but nothing happened. The only way to make problem stop is to deactivate permanente links.

I even tried to check the file for a syntax error but nothing seems to be wrong. This is line 207:

if ( preg_match("#^$match#", $request_match, $matches) || preg_match("#^$match#", urldecode($request_match), $matches) )

Version being used: 4.3