I have seen my problem about a hundred times. I Haven't found a solution that works for me.
I am moving my web site from an old server ms win2k3 no sp's. To a newer better one with win2k3 sp2
The path on the 2 machines is identical except the machine name.
From localhost I get "unable to find script library '/aspnet_client/system_web/1_1_4322/WebUIValidation.js'
From th www I get a logon dialog box everytime I attempt to do anything.
I have run 'aspnet_regiis -c' no fix
Then I ran 'aspnet_regiis -i reinstalling and svr32 and reregistered the aspnet_isapi.dll succesful.
Web site still has the same errors.
I made sure my virtual directory was pointing to wwwroot, even repointed to 1_1_4322 still not working
I restarted IIS and or the machine between each "fix"