Cannot display Classic ASP website locally - iis

Question

I have a Classic ASP website that I need to run locally. My OS is Windows 7 and using Visual Studio 2010.
In the IIS under the Default Web Site, I added the application in the folder, classic_asp_website. I created a Classic ASP application pool to connect to the website. I can successfully test the connection by going into the 'Basic Settings' and 'Test Settings'. The user credentials are valid.
The tree in IIS looks like this:
Application Pools
Sites
Default Web Sites
classic_asp_website (folder)
Paging (folder)
Paging
I want to step thru the web site by 'Attaching to a Process' but I can't get the website to display.
When I type into the browser the url http://localhost/classic_asp_net/Paging/Paging, the header displays with our logo but on the rest of the web page it says;
Server Error 'Default Web Site'" Error: 404.
The URL is correct. When I expand the Paging folder in the IIS, the folders are all there. The webpage is default.asp. Even when I add this to the URL, I get the same error.
I don't understand why it wouldn't display the webpage.
In addition, I made sure that ASP was enabled under the Window Feature within the Application Development folder.
Any ideas or suggestions would be appreciated.
UPDATE
Checking the log files from the IIS, the default page seems to load
Here is the text:
/classic_asp_website/Paging/Paging/default.asp - 80 - ::1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.1;+Trident/6.0;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+Media+Center+PC+6.0;+.NET4.0C;+.NET4.0E) 200 0 0 35
I am taking the '200' number to mean there were not errors.
Then there are 3 - '404 errors and 1 '500 error.
I don't understand why it can't find the files. I added them to the appropriate folders. Here are the rest of the errors:
2015-01-30 21:11:03 ::1 GET /Common/Images/Background.gif - 80 - ::1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.1;+Trident/6.0;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+Media+Center+PC+6.0;+.NET4.0C;+.NET4.0E) 404 0 2 3
2015-01-30 21:11:03 ::1 GET /classic_asp_website/Paging/Paging/ASP/MainPager.asp UserID=|1|ASP_0131|Disallowed_Parent_Path 80 - ::1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.1;+Trident/6.0;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+Media+Center+PC+6.0;+.NET4.0C;+.NET4.0E) **500** 0 0 10
2015-01-30 21:11:03 ::1 GET **/Common/toolbar.asp** - 80 - ::1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.1;+Trident/6.0;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+Media+Center+PC+6.0;+.NET4.0C;+.NET4.0E) **404** 0 2 40
2015-01-30 21:11:03 ::1 GET **/Common/Images/Background.gif** - 80 - ::1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.1;+Trident/6.0;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+Media+Center+PC+6.0;+.NET4.0C;+.NET4.0E) **404** 0 2 2
I don't know what 'Disallowed Parent Path' means.

Answer 1

If I remember correctly, what Disallowed Parent Path means is you can't do something like this:
<!--#INCLUDE VIRTUAL="../../commonLibrary.asp"-->
meaning going up into the parent directory when including files. This is considered a security risk.
If your code does this and you are okay with it, you can allow it, in IIS Manager open the ASP icon and change:
Enable Parent Paths True

Answer 2

I have got this problem recently,its because your site has settings to PREVENT 'Parent Path' for ASP. (I guess relative paths are used in your code)
To Fix it:
1. Open your IIS manager.
click on your site on the left pane. (my one is "Default WebSite")
click 'ASP' icon on your right
change 'Enable Parent Path' to true.
It will fix your problem.