Aquiring Workstation inventory issue

Hi,

I�m trying the SD pro 5.5 and i�ve noticed an issue when aquiring the desktop inventory. Well its like this I�m in a domain introduce the credentials to query the machines in the domain and its working fine, were i�m seeing the status of how many machines have been aquired, but after a while the popup where i�m receiving the status of this operation says. "page not found error 404...." if there were some sort of a timeout. I would like to know how can i fix this?

Then i�ve checeked the machines i�ve got the inventory, and i only find a few workstation 60-70 in an universe of 150-160

Thanks,
P.R.