can not input a Network Range for Discover

can not input a Network Range for Discover

Hello everybody,

i have install V7 of OPManager on a Windows XP Prof. system.
The Gui works fine without any problems.
Now i discover the network and use the follow values.
ip range: 10.177.96.1 - 10.177.96.254
i have choose any network mask but the message: Please enter a valid number.

BTW: i cant change the network address/mask in my network.

thanks and regards

dbase











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