Suite After migration to Linux server, ACP redirects to install.php
 

I moved my vB 4.2 site from a Windows server to a Linux server. When I try to log in to the admincp it redirects to install/install.php (which doesn't exist, of course). I reuploaded all my vB files and still have the same problem. I checked the db tables and they look fine, and ran repair for good measure. I cleared the cache and tried it in various browsers. Other folks have encountered a similar problem but I have not been able to find any recommended solutions other than the two that I have done.

Any help would be appreciated.