Need help on lost 3TB GPT partition

Hi everyone,

I have been using Defraggler for years now and have been quite happy with it.

Recently, by routine, I let it defrag a new WD 3TB partition ( >50% filled, one partition).

The next morning the partition was not readable for windows7 (64bit), although driveletter is still there.

I tried different recovery programs. None would succeed.

I assume Defraggler ( I am using v2.11.560, 64bit) butchered the MFT or something the like.

That drive contains all the photos I shot for the past 3 years.

I desperately hope that any of the Piriform-champs out there knows a way to restore the data.

I am open for simple recovery or a way to copy the content to another drive.

Anything else you need to know, let me know.

thx in advance

t-rex