Error (Could not start War3.exe! Make sure the loader in your Warcraft III install directory.)

Mohon bantuanya, udah 2 hari aku otak-atik tetep ga bisa main dota.
Saya udah baca-baca blog mulai dari gamers tetep belum ketemu solusinya.

Selalu muncul error:
Could not start War3.exe! Make sure the loader in your Warcraft III install directory.

PC saya habis di instal ulang

Note :
1. OS : WIndows XP Professional
2. Smadav

masuk ke folder warcraft mu, klik kanan w3l, send to desktop
lalu buka shortcut w3l di desktop mu.