Shell Programming and Scripting

I have a Perl script, that does a system call with rsh to a remote machine.

#!/usr/bin/env perl
system ("rsh remote-machine echo 99");

And I get the following:

stty: standard input: Invalid argument
99

I've tried replacing the system call with below, but I still get the same stty message.
system ("rsh remote-machine -l myusername echo 99");
I've also tried addin single quotes around the rsh command, i.e. 'echo 99', but it didn't get rid of the stty message.

What does the "stty: standard input: Invalid argument" message mean, & how I get rid of it?

PS. I've tried searching past posts, & there was one in 2002, but it didn't help me.

---------- Post updated at 11:11 AM ---------- Previous update was at 10:50 AM ----------

I just found the answer in an earlier post:

Deleted the following line in my .cshrc:
stty erase ^H

Hello
you would want to check this
http://www.perlmonks.org/?node_id=534691
Hope this helps.
regards.