Problem with Log In

I have done a new installation of IntegraMOD 1.41 and followed the documentation when setting it up. I have registered myself as the admin. The problem is when I attempt to login as admin, I get the following message in an IE page:
When I refresh the page I get the same standard connection error problem. I then installed IntegraMOD 1.41 on a new server and I get the same problem when I attempt to log on as admin. Was there any changes made to the login pages, or has anyone alse had this problem when installing the latest 1.41 download???
The website cannot display the page
HTTP 500
Most likely causes:
The website is under maintenance.
The website has a programming error.
What you can try:
Refresh the page.
Go back to the previous page.
More information
This error (HTTP 500 Internal Server Error) means that the website you are visiting had a server problem which prevented the webpage from displaying.
For more information about HTTP errors, see Help.
When I refresh the page I get the same standard connection error problem. I then installed IntegraMOD 1.41 on a new server and I get the same problem when I attempt to log on as admin. Was there any changes made to the login pages, or has anyone alse had this problem when installing the latest 1.41 download???