Hi All, I was using the version 1.2 and suddenly I got the error: Modification of non-creatable array value attempted, subscript -1 at ../..//Kernel/Output/HTML/Agent.pm line 2024. I upgrade to the version 1.3 and the problem persisted. The problem happens in the second line of the following part: if (! $Queue[$MaxLevel]) { $Queue[$#Queue] = $Self->Ascii2Html(Text => $Queue[$#Queue], Max => 50-$#Queue); my $Space = ''; for (my $i = 0; $i < $#Queue; $i++) { $Space .= '  '; } Making a quick debug, I perceived that $#Queue had the value -1, what apparently provokes the error: So, I changed the "if" statement to: if (! $Queue[$MaxLevel] && $#Queue > 0) { what apparently solved the problem but, I'm not sure if it's the best solution for this issue. I appreciate any help. Best Regards, ./isamar -maia