"No recipient addresses found in header" error with mail() function

[PaysonWinters]

Hi, I've developed two contact forms to be sent using the mail() function, and one of them works perfectly with no errors, but the other (which is built from the same code as the first) displays this error message when I try to load the page. "No recipient addresses found in header"

I've tried looking through other threads for this, but I haven't found anything relevant to my situation, only things about Perl.

Anyone have any questions or suggestions?

The code is kind of lengthy, so if anyone would like to see it I will add it later.

[NogDog]

First thing is to make sure the value being passed as the first argument to [man]mail/man is not empty. (Assuming it's a variable, try a [man]var_dump/man of that variable right before you use it to see what its value is.)