Hi Bob!
Thanks for your reply!
I am using the latest version 1.0.7-pl. The recommended replacement and the hint to uncheck "check config files" worked for me, it seems to be working now as it should. Although I don't now where I can check the status I'm getting now? The Firefox-console doesn't "say" anything.
OK, If you're not seeing the status in the output (it wouldn't be in the console, but in the regular output), that almost certainly means that the get_headers() call around line 584 is returning false. Unfortunately, that doesn't tell us anything at all about what's going on.
Removing the @ sign in this line, might (or might not) generate a useful error message if you have things set to display errors and error reporting is on.
$headers = @get_headers($url, true);
