diff --git a/README.md b/README.md
index 6672cf4..0fc7c58 100644
--- a/README.md
+++ b/README.md
@@ -61,11 +61,12 @@ If you're running on Linux, you will need to look up how to get the tools above
 
 ## Every Operating System
 
-You will probably need `Log::Log4perl` for your Perl installation. You can do this step just in case if you're not sure if it's installed. 
+You will probably need `Log::Log4perl` and `XML::LibXML` for your Perl installation. You can do this step just in case if you're not sure if it's installed. 
 
 1. Open a terminal or command prompt on your operating system
 2. Type `cpan Log::Log4perl` and then press return/enter
-3. The CPAN manager should install the logging module, you should be able to exit the terminal now.
+3. Repeat step 2, but type `cpan XML::LibXML` instead
+4. The CPAN manager should install the logging module, and the XML module, you should be able to exit the terminal now.
 
 If you are using Mono, the first run always takes a little bit (about a minute). Please be patient.
 
diff --git a/UnlinkMKV-GUI/UnlinkMKV-GUI/winport.pl b/UnlinkMKV-GUI/UnlinkMKV-GUI/winport.pl
index 0f529ca..799f448 100644
--- a/UnlinkMKV-GUI/UnlinkMKV-GUI/winport.pl
+++ b/UnlinkMKV-GUI/UnlinkMKV-GUI/winport.pl
@@ -349,7 +349,7 @@ package UnlinkMKV {
 		    }
 		}
 		close $H;
-		if (defined @{$seg->{attachments}} && @{$seg->{attachments}} > 0) {
+		if (exists $seg->{attachments} && @{$seg->{attachments}} > 0) {
 		    my $dir = cwd();
 		    TRACE "chdir $self->{tmp}/attach";
 		    chdir("$self->{tmp}/attach");
@@ -482,7 +482,7 @@ package UnlinkMKV {
 			@aopt = undef;
 			@aopt = qw/-map 0 -acodec ac3 -ab 320k/;
 		    }
-		    $self->sys($self->{opt}->{ffmpeg}, '-i', "\"" . $part . "\"", @vopt, @aopt, "\"" . "$part-fixed.mkv" . "\"");
+		    $self->sys($self->{opt}->{ffmpeg}, '-i', "\"" . $part . "\"", @vopt, @aopt, "\"" . "$part-fixed.mkv" . "\"", '2>&1');
 		    $self->replace($part, "$part-fixed.mkv");
 		}
 		less();
@@ -555,7 +555,7 @@ package UnlinkMKV {
 	my $file = shift;
 	my $size = int(((-s $file)/1024+.5)*1.1);
 	my $br   = 2000;
-	foreach my $line (split /\n/, $self->sys($self->{opt}->{ffmpeg}, '-i', $file)) {
+	foreach my $line (split /\n/, $self->sys($self->{opt}->{ffmpeg}, '-i', $file, '2>&1')) {
 	    if($line =~ /duration: (\d+):(\d+):(\d+\.\d+),/i) {
 		my $duration = ($1*3600)+($2*60)+int($3+.5);
 		$br = int(($size / $duration)+.5);
@@ -626,7 +626,7 @@ package UnlinkMKV {
 
 
     # We use this instead of CRC32 so we can avoid requiring compiling native C code for usage
-	sub mycrc32 {
+    sub mycrc32 {
 	 my ($input, $init_value, $polynomial) = @_;
 
 	 $init_value = 0 unless (defined $init_value);
@@ -655,7 +655,7 @@ package UnlinkMKV {
 	 $crc = $crc ^ 0xffffffff;
 
 	 return $crc;
-	}
+    }
 
 
 
@@ -808,8 +808,8 @@ package UnlinkMKV {
 	my ($pid, $in, $out, $err, $sel, $buf);
 	my $cmd = "$app @_";
 	TRACE "sys > $cmd";
-  my $dbuffer = `$cmd`;
-    return $dbuffer;
+	my $dbuffer = `$cmd`;
+	return $dbuffer;
 
 	$err = gensym();
 	more();
@@ -817,7 +817,7 @@ package UnlinkMKV {
 	$pid = open3($in, $out, $err, $app, @_) or LOGDIE "failed to open $app: @_";
 	$sel = new IO::Select;
 	$sel->add($out,$err);
-	SYSLOOP: while(my @ready = $sel->can_read) {
+	while(my @ready = $sel->can_read) {
 	    foreach my $fh (@ready) {
 		my $line = <$fh>;
 		if(not defined $line) {