Hi, I've bought plesk 7.5.4 and after some days I upgraded it to 7.5.5 but after that, most of the services have failed. I've requested assistance (the 30 days support) and swsoft support have fixed almost every problem. Now, I need to upgrade to 7.5.6 because of .net 2.0 support but the upgrade fails. It looks "C:\WINDOWS\Installer\Plesk\051007.11\plesk_7.5.5_build051007.11.msi" is corrupted!. The 30 days support have already gone so we do not have swsoft support anymore. We get this error on upgrading: The file 'C:\WINDOWS\Installer\Plesk\051007.11\' is not a valid installation package for the product Plesk 7.5.5 for Microsoft Windows. Try to find the installation package 'plesk_7.5.5_build051007.11.msi' in a folder from which you can install Plesk 7.5.5 for Microsoft Windows. The file is in that folder but I allways get this error. What can we do now? Any idea?