Mr. Newb:

Since chomp doesn't normally cause problems like that, we'll have to see *some* data to see what's going on. Take a CSV file and chop chunks of it out until you get a small bit that reproduces the error. If there's any confidential data, then scramble it or some such.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

Did you trie to read the file with Text::CSV_XS? It does handle tab separated data as exported by Excel fine when instructed to do so (no need for chomps):

use Text::CSV_XS;

open my $fh, "<", "file.tsv";
my $csv = Text::CSV_XS->new ({ binary => 1, sep_char => "\t", auto_dia
+g => 1 });
while (my $row = $csv->getline ($fh)) {
    # …
    }
close $fh;
[download]

Or maybe it puts nothing...that sounds more reasonable