error code 4 when loading r4

when loading some games i get errcode=-4 please reset system can anyone offer any advice on this problem

What games are they?

all petz games and rabbids go home....

Update your firmware then try to download one game again.

i have the lastest firmware for the SDHC R4....

Try to download a pet game again.

tried that still no go i even patched the rom thinking it was the arm 7 but that didn't work either :-\

some say thier DSi enhanced but it can't be cuz bleach darks souls got this problem and that was released ages ago!

It's a basic incompatibility error. The game won't run.
It happens often on DSi Enhanced games though.The best you can do is update to Ysmenu firmware.