I'd guess it's your network settings (although that "some other" error would be helpful to know too, if you can get it?).
Perhaps your PC running SOFTPAC has a DNS/Gateway that the R2 lacks.
From PAC Manger, go to Tools > Change IP Settings, click "Read Current Settings" then fill in Gateway / DNS Address if they're 0's. Usually you'd use the same settings your PC shows when, from a DOS prompt, you "ipconfig" or "ipconfig -all".
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