Problem with Attachment.php

I am using Xunlei and for some reason I couldn't get the pop up to download anymore. I can only download "attachment.php" and that's it!os.tvboxnow.com- Y5 u |, H9 `
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I believe I've done something to ".php" default program.os.tvboxnow.com S, b. m) A" y* H: R
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。+ ^( a0 Q9 t- E8 @
Anyone please help. Thanks