I exported my blog for safe keeping to a development copy on localhost on my desktop computer. Then I deleted all the wordpress files from the root of my remote web server. I unpacked new wordpress files using subversion and after the files were placed in the root of the folder, uploaded my old config file from the previous wordpress installation. Instead of the installation running as expected, I got a database error and couldn't complete the installation. What did I miss? Do I need to start with a fresh database or is there a way for me to use the old database with a fresh installation of wordpress? I am using the latest version of wordpress through subversion. Thank you in advance for your advice.