Hi,

I'm very new to DotNetNuke, and having several major issues. I'd
really appreciate any help you could give me!

I'm using DotNetNuke 04.05.03 and asp.net 2.0

I have two databases set up: DotNetNuke (which I installed myself
using the book "Professional Dot Net Nuke 4" as a guide) and DNN
(which I downloaded from the company I work for so it already had
some code etc.

With the DotNetNuke one I have two issues:

1. I created a site, and added a few pages to it (including a login
page which forces you to login before you can view the other pages).
Now if I try to go to the URL http://localhost/dotnetnuke I get the
following error:

Server Error in '/DotNetNuke' Application.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference
not set to an instance of an object.

But if I go to http://localhost/dotnetnuke/Home/tabid/3... I get the
login page.

2. The page was working properly the other day (through localhost -
it's a work in progress) but now whenever I try to modify modules or
post on the forum or add comments to the blog etc I get an error
whenever I hit the 'reply' or 'update' buttons. I'm using Internet
Explorer, and get the error message in the bottom left corner. If I
click on it I get the message:

WebForm_PostBackOptions is undefined

It must be a setting somewhere, because I was able to modify/post
properly a few days ago. I found a post somewhere suggesting going
into the IIS and making sure "Check that File Exists" is unchecked,
so I made sure of that, but the issue is still there.

And with the DNN I have one major issue:

1. There's a table called "PortalAlias" in the database (which I'm
opening using an SQL server), and in it there are three columns:
PortalAliasID, PortalID and HTTPAlias. The first line has Alias 1,
ID 0, and whatever I type into the HTTPAlias is the site that
explorer directs to when I type in http://localhost/dnn (for example
if I type in www.google.com in the table, and then in internet
explorer type in http://localhost/dnn then it directs to google) .
If I make HTTPAlias read "localhost\dnn" then I get the following
error:

Server Error in '/Dnn' Application.

Invalid URI: The hostname could not be parsed.

Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.UriFormatException: Invalid URI: The
hostname could not be parsed

I can't figure out how to fix it, and anything else I put in the
PortalAlias table simply gets a 'page not found' error.

Please help me!