Right I have a Pokemon Platinum retail cart and an Action Replay DSi. I backed up my Pokemon Platinum game save and have tried to convert it in multiple ways:
Shuny Web Converter
Offline Save Converter and
ARDStoSAV
None of these have worked. I have done this before a long time ago, around 2 months ago now but I cannot remember what I used. I think it was ARDStoSAV, but now all it does is say on PokeSav, "Wrong FIle type" and it is definitely a .sav file, 512KB.
Please help.