Urgently needs help!
For some reasons My Surveillance add-on stopped working

i tried to reinstall the add-on and it is when nightmare starts...
i could not get My Surveillance installed regardless how I tried... i tried installing 2.05 from the GUI without success, says "Install Failed"
manual install the add-on downloaded from following locations without luck - error "Install failed. Please check file."
http://tsd.dlink.com.tw/downloads2008detail.asp
http://www.dlink.com/uk/en/home-solutions/share/network-attached-storage/dns-340l-sharecenter-4-bay-cloud-network-storage-enclosure
my DNS-340L runs on firmware 1.02 (shipped by default)
i tried downgrading to 1.01 with no luck, fw downloaded and tried:
http://tsd.dlink.com.tw/downloads2008detail.asp
http://www.dlink.com/uk/en/home-solutions/share/network-attached-storage/dns-340l-sharecenter-4-bay-cloud-network-storage-enclosure