Error: Incorrect header check

[nedimcb]

With FreeFileSync 5.4 and 5.5 (on Windows 7), when trying to sync across a
home network, just started getting following error:

"Can't read from inflate stream: incorrect header check"

I am not aware that I changed anything from before this error arose. If I
choose "Ignore" each time (message comes up for each folder), the sync seems
to go through okay. Have no idea what this error is or what can be done to
resolve this. Can anyone help in this regard?

Ned

[Zenju]

FFS v5.5 changed the format of the database file. v5.5 is downwards compatible
an can read the < v5.4 format, but it is not upwards compatible: v5.4 cannot
read the v5.5 format.

[nedimcb]

Thank-you.