I fix PCs for a living, as expected CCleaner is an essential part of the toolkit. I have all my software on an SD card, which I lock in order to prevent viruses jumping on to the card and hitching a ride to another PC (a common occurrence).
When running CCleaner portable from the SD-card, I get various Windows system errors whenever CCleaner tries to save its settings (when ticking boxes, changing options, or closing the app).
Please detect when CCleaner is running from read-only media and don’t try to save the settings.
Many thanks,
Kroc Camen.