DS downloads not working

ive noticed recently that the downloads on here for the DS do not work on my R4 card. i might be dumb and some simple explanation for it but can anyone explain why they do not work? ive been wanting GTA chinatown wars for months now but when i download it and start the game it says that cant create a save folder and to turn off DS and try again. Can anyone help??

R4 is outdated and no longer supported. Newer games need a lot of fiddling to work on it and it cannot be long before games come out that cannot be made to work on the R4 because it is just not updated anymore.

For GTA, please read https://www.romulation.org/forum/index.php?topic=14970.0