Ok, i am also using windows 7, if i put back in Firefox and Chrome, but leave "Compact Databases" unticked, CCleaner works, so definately in the right area
unticked the Chrome cleanup - Still failed this time while doing Firefox - reran with /debug files attached
had to change the extention on both files to get it to allow the upload
CCLeaner64.exe.4808.dmp
CCleaner64_v5.27.5976_2017-02-16_11-16.log
let me know if you need any other files or info
CCleaner64.exe.4808.txt
CCleaner64_v5.27.5976_2017-02-16_11-16-41.txt
downloaded and installed this morning, it starts up ok, Analysis ok, starts running clean up then crashes, without giving a decent error message, screen shot attached