My Sims problem.

The game keeps on saying Cannot read data all the time. Please help me!

what flashcart are you using, what firmware do you have, and have you trimmed the ROM.

I have that problem too, I am using an M3 Simply. I don''t think I have trimmed the ROM

Did you verify that you have the latest firmware?

yeah, usually a firmware update will fix this for many games. except for worms 2. at this point in time, every game besides worms 2 will work on an R4 without patching.

hmm... i'm running across the same problem as well...i have firware v1.04 on my M3 DS Simply

Mine is doing the same thing but I'm clueless as to how to update such firmware i dont even know what that is! xD
i have windspro but thats it.
I'm not sure how to work these things yet I'm pretty new to emulators and such.
so dont keeel me >.<

Firmware in this case relates to flashcarts. For your particular problem, read the Common Issues. https://www.romulation.org/forum/index.php?topic=1462.0