Could not open the file in application server

Hi All,

I have a Zreport which will write files on application server. When I tried to download it is showing me "Could not open the file". And when checked again with /nal11 the files does not exist. When I ran the Zreport again the file exist in application server but unable to download. And when checked again the file doesnot  exist. Why it is getting archived? Please help me.

Thanks,

Venkata