You've got a San Francisco (or other Blade model), right? If so, the usual problem is that you've protected your SIM with your own PIN (4 digits) and the phone prompts for that first. It will request "SIM network unlock PIN" when it wants the 8 digit unlocking code.
As you have unlocked successfully it is probably worth posting this in a more sensible place (perhaps a thread of its own, or search for the error message and post in one of those threads). Would be helpful if you specified exactly when you get this error message, too.
You need Display.apk, Buttons.apk, SDCard.apk, PhoneBitsAndBobs.apk, WirelessThingy.apk, WhereAmIPleaseGPS.apk, WhichWayCompass.apk, CrappyCamera.apk, VariableVideo.apk, TiltyStuff.apk, IsThatMyEar.apk and SomeoneTurnedTheLightsOff.apk.
Maybe some of these use a proxy (which is usually setup automatically by the browser on 'proper' computers). To use a proxy on the Blade you need to be running 2.2+ and something like the excellent TransProxy. But you'll probably also need to manually find out the proxy details, by finding and examining the proxy.pac (or wpad.dat) being offered by the wifi network, since Transproxy doesn't do the auto bit.