problems running l2 help please

when i run the game, i get a message saying "patch is invalid game (... \ system \ l2.exe)"

what i have to do?

it used to work, until i update, help me please.
thank you.

 

uninstall your 4game application.
clean up a registry and browser's cashe.
install the application again.
set the installation path for l2 into the existing folder.
wait for full check.
try to play.

 

good day,

you can see actual solutions and issues' statuses here.
additional instructions could be found here.
if you can't find a solution for your issue you always can ask for moving the thread back into the main branch.

best regards,