Basically it says:
"Your save data is outdated. Save data version is 0.100a, game version is 0.100d. [Your save data] had been upgraded, but some incompatible effects might be lost during the process."
While this message is rather creepy, it's normal to appera when you try to upgrade from an older version. And, just like you've described, Urotsuki is supposed to move away from her PC after this message.
Just go back to the PC and save, I believe everything is fine, though I'm not sure if the save data from the english version is compatible with the original game or not.