Unable to open project. Reason: UnmarshallException

Hello,
I am using Katalon 5.4.0 on Mac (macOs 10.13.4).
I’ve created a project, worked on it for some time and now I would like to give it to one of my colleague who is using a PC on Windows 8.1 2013. So I made a copy of the whole Katalon project directory to the Windows PC.
When I tried to open it I got the following error : “Unable to open project. Reason: UnmarshallException”.
I used to proceed like this frequently, but I am getting this message following to the new version 5.4.0.
Any idea ?