Disgaea cannot be loaded

Whenever I try to load Disgaea, an error message comes up. The same is happening with kirby.'Unable to read save data. Please turn the power off and reinsert the game card'I'm using an R4 Chinese version (where are the kernels for the Chinese version anyway?)N.B. This only seems to happen with the games I have recently dowloaded, don't know if that means anything

Dwonload it from here http://www.r4ds.cn/soft/r4-v1.18.htmOn the bottom of the page it says R4 v1.18简体版: 下载地址1 下载地址2(香港) click on 下载地址1