- Messenger Plus! Live will simply add the new files and overwrite the already existing ones. That means that any obsolete file will still be on the user's computer. You could however write a simple function to look for the old files and delete them when necessary.
- When you upgrade a script, Messenger Plus! Live won't touch the registry at all. That means any keys saved in a previous version will still remain when installing a new version.
Hopefully that helped you.
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