If an error occurs during uploading of the files, check:

 

•Check your hosting ID and your password  - see screen Hosting Settings or Own Server Settings

•Do you have a firewall enabled? - Disable the firewall and try again

•Do you have an antivirus software installed? - Disable the antivirus software and try again

•If you are using an own server check your FTP server settings

 

If the upload still generates an error, upload the files manually - see chapter Manually Upload Files.