I need to use my tascam dr 100 mkii as player for some audio tests etc, but any file I put on my sd card is not played, i got error,
do I miss something?

Can you be more specific.. what file format and what do you mean by "does not play"? Playback application, portable player? Do the files download to computer OK? What brand/size card? Tascam has a list of recommended cards that were tested and operate without issue.

sorry I meant repro with files uploaded from external world.
card sandisk, everything is ok with any file recorded on board, but if I bounce any wav file and put it on the card the dr100 give me "file error" even it has same setting of files recorded.
for example, I recorded a pink noise 10 minutes file in logic and bounced in as wav file 48khz named pink_noise_001, I dragged it on the sandisk but th tascam give me file error.