Use a different word instead of 'clean' rather 'fix' because clean can be interpreted as 'delete'. Secondly, offer more languages or let the users send/make the translation of the program. A possibility of doing automatic backup before 'cleaning' wou

1. "Clean" can be interpreted as "delete" which I suppose is not always the case. I would prefer the word "fix".
2. Offer more languages or even better, ask users to translate commands into their languages.
3. Registry clean up is risky, I would prefer the program to make an automatic backup of the registry before any changes.