"Last Download Location" breaks Thunderbird Profile

[Mayrell]

CCleaner Version: v5.31.6104 (64 bit)

Thunderbird Version: 52.1.1 (32 bit)
OS: Windows 10 (64 bit)

 

How to reproduce:

- Close Thunderbird (if open)

- Backup your Thunderbird profile data from C:\Users\<Username>\AppData\Roaming\Thunderbird\Profiles to a secure location

- Run latest CCleaner with "Last Download Location" checkbox enabled in Thunderbird application settings

- Open Thunderbird

 

What happens:
- Thunderbird cannot access existing profile data and shows first startup wizard (no "broken profile files" info or anything)

- Profile data is still there but somehow corrupted, Thunderbird still references correct profile folder but cannot "see" it for some reason

- As soon as you overwrite profile data with your backup, everything works again

 

Conclusion:
The new "Last Download Location" setting somehow corrupts Thunderbird profile data.

I checked with only this setting enabled, it is definitely the cause of the problem.

[alaGabba]

Same here https://forum.piriform.com/index.php?showtopic=48428 

[jstonepvr]

I can confirm this behavior on Windows 10, 64 bit Creator's Edition.

[hazelnut]

Please see here

 

https://forum.piriform.com/index.php?showtopic=48428&do=findComment&comment=284145

[Kerflot]

Same here on Windows 7 32bit.

Accounts and profiles gone.

[swatbat2142]

Same here on all versions of my Windows systems.  Windows 10 Pro 64-bit, Windows 8.1 Pro 64-bit and Windows 7 Pro and Home 64-bit

[DooGie]

Happy to say I had recent backups for both Firefox and Thunderbird profiles.

[Nergal]

Be sure you've tried the patched version which should make sure this doesn't happen again (will not magically recreate your profiles though sorry)