Symptoms:
Server control tags are shown in browser rather than the controls. This means that ASP.Net is not properly registered with IIS.

Solution:
These steps must be followed on the server computer:

Start>Run>cmd
cd %windir%\microsoft.net\framework\v1.0.3705 [press enter]
aspnet_regiis -i [press enter]

If the v1.0.3705 directory does not exist, do this:

Start>Run>cmd
cd %windir%\microsoft.net\framework\v1.1.4322 [press enter]
aspnet_regiis -i [press enter]

If the v1.1.4322 directory does not exist as well, follow this link to download asp.net to your computer:
http://www.microsoft.com/downloads/details.aspx?FamilyId=D7158DEE-A83F-4E21-B05A-009D06457787&displaylang=en