Solution to FGTech V54 0475 can't find FGT2XX.dll

The first time the user installed FGTech Galletto 2 V54 0475, he encountered the following problem.
The software cannot be verified! The software may not work.


Then, he operated by following this video:


And got new error "Cannot find "FGT2XX.dll", Please re-install this application".

Possible reasons and solution by obdexpress.co.uk enginner:
Some files are get lost.
Please connect FGTech V54 to the computer and the car, then complete install the driver, re-install the Galletto software.
Here I leave a email Sales@OBDexpress.co.uk in case anyone need remote assistant.