As I see from your log, you did not complete the configuration yet. There is an error with the Report Manager Virtual Directory. How did you configure this instance? Did you follow this:
1. Install the SQL Server 2005 without the Reporting Service
2. Run a SP installation for the SQL Server
3. Install Reporting Service from the same media you used to install the SQL Server 2005
This configuration will cause a lot of errors. The most ideal way is to install the reporting service with the default configuration while installing the SQL Server at the same time. However, try these:
1. First re-apply the same or higher version SP you applied to your MS SQL installation.
2. From the command prompt, navigate to Windows\Microsoft.NET\Framework\v2.0..500(whatever version you have)
3. Run this command:
aspnet_regiis.exe -i
4. Re-run the RS configuration tool
5. Make sure that the status of ASP.NET version 2.0.50.... is set to Allowed in the Web service extension list in Internet Information Services Manager
6. Make sure that the virtual dirctories for RS is created and status of ASP.NET version 2.0.50..... is set in the virtual directory properties.
Please update as you progress.