A full list of changes between version 5 and 6 can be found here http://www.visualcron.com/ChangeLog.aspx
API
If you are using the API you have to upgrade to the latest version of the API for version 6 in order to connect to version 6.
Desktop short cut
The desktop shortcut is named VisualCron 6.
Installation notes
Always make a backup before upgrading to another version. You can do a backup in Client File > Import/Export > Export settings - export to another location than default.
Version 6 version requires .NET 3.5 (previous version required 2.0). .NET redistributable can be downloaded here: http://www.microsoft.com/download/en/details.aspx?id=21
VisualCron installer will uninstall the current version and install the new version. Old settings will remain and if needed properties will be upgraded.
You may need to verify these Task types because of changes from version 5.x:
•PGP Encrypt/Decrypt
•Rename Task
•Archive compress/decompress
Especially check source and destination folder properties.
Credentials
The way we handle Credentials have changed to provide more control of the actual Credential. Please read more about Credentials here