Terminal $PATH error

Question

Everytime I start up Terminal I get this error:
-bash: export: `/usr/local/bin': not a valid identifier
I have tried many things so far no succes. I keep getting this error.

Answer 1

Thanks for the help so far ! This is driving me nuts.
cat /etc/profile
# System-wide .profile for sh(1)
if [ -x /usr/libexec/path_helper ]; then
    eval `/usr/libexec/path_helper -s`
fi
if [ "${BASH-no}" != "no" ]; then
    [ -r /etc/bashrc ] && . /etc/bashrc
fi
cat /etc/bashrc
# System-wide .bashrc file for interactive bash(1) shells.
if [ -z "$PS1" ]; then
   return
fi
PS1='\h:\W \u\$ '
# Make bash check its window size after a process completes
shopt -s checkwinsize
# Tell the terminal about the working directory at each prompt.
if [ "$TERM_PROGRAM" == "Apple_Terminal" ] && [ -z "$INSIDE_EMACS" ]; then
    update_terminal_cwd() {
        # Identify the directory using a "file:" scheme URL,
        # including the host name to disambiguate local vs.
        # remote connections. Percent-escape spaces.
    local SEARCH=' '
    local REPLACE='%20'
    local PWD_URL="file://$HOSTNAME${PWD//$SEARCH/$REPLACE}"
    printf '\e]7;%s\a' "$PWD_URL"
    PROMPT_COMMAND="update_terminal_cwd; $PROMPT_COMMAND"
fi
export PATH=$PATH: /usr/local/bin