Install Server.MapPath giving current directory

[DavidR63]

I am trying to install AC7.0 on my web host. I am going to the install directory and I am getting the error below. When looking at the code I see it's getting the path using Server.MapPath("~/App_Data/PERMTEST.TXT"). On my dev box (internal) this has worked fine returning the correct website root. But on the host it's giving the current directory (Install) as the root. I know I am missing something, is there a configuration change I may need to make?? I would have called support but it took a very, very long time to get the web host company ready for this (whole other story). I have changed some names for privacy.

Installion Error
You do not appear to have the correct permissions to install. The application must have the ability to write files to your installation folder. Make sure the user has MODIFY access to the install path.

Windows User: MACHINE\ASPNET
Install Path: C:\websites\company\ablecommerce\Install\

The exception was:

Could not find a part of the path 'C:\websites\company\ablecommerce\Install\App_Data\PERMTEST.TXT'.

[mazhar]

Make sure that App_Data folder is not read only.

[DavidR63]

That was my initial thought, but look at the error closely. Notice that it's looking for the App_Data folder under 'Install', it should be looking for App_Data under the ablecommerce folder. For some reason the Server.MapPath("~/App_Data/PERMTEST.TXT") is returning a relative path with 'Install' instead of 'ablecommerce' as the root for the site. The error also says that it cannot find part of that path, which makes sense since App_Data is in the root not Install. My dev box does not do this so something must be mis-configured, but what I don't know.

[mazhar]

One thing could be to make sure that your virtual directory maps to ablecommerce folder not to ablecommerce/install folder. It seems like it is taking ablecommerce/install as application where as it should be ablecommerce/