Hello,
I'm having trouble with Ccleaner and the Mozilla Firefox caché. Despiste unmarking all options to clean Firefox that Cclenaer has and adding the locations were as far as I know the caché is stored to the excluded files (C:\Users\'user name'\AppData\Local\Temp\acro_rd_dir), when executing Cclenar it is still deleting the firefox cache and I don't know why. (in addition, it seems its only affection to the caché storage maybe, like pages that store information in the caché, cause any other page is running well with all my accounts in).
I use Windows 8.1 on this computer and in my Windows 7 laptop only by unmarking all Firefox options is enough.