Thank you !
Tutorial:
-How can I do that ?
- 1) Upload the 5.1 savegame.rar (you must have the beta5.1 to continue)
2) Open the file beta5.1 an go to "data"
3) Delete the files: Save.DO2, Save.DO2backup, and savedata.dat
4) Move the files: Save.DO2, Save.DO2backup, and savedata.dat of the 5.1 savegame.rar to the "data" file.
CONGRATULATIONS !
Now, you can save the game
Sorry if I maked mistakes, my English is bad ^^'