Ive been successfully recording live shows multitrack (capture 2) to SD card (Sandisk 30 gb microSD recommended by sweet water) with out any problems until recently. After every show I move the folder off card to my laptop. I'm arming 16 track and LR tracks. Its been working flawlessly until last 2 shows. During gig, I look down at the recording screen and instead of green icon its showing red with 5 or 6 errors (90 min recording). I didn't fill card all way. Speed test checks out. Haven't upgraded or changed anything. Just not sure why I'm getting the error messages recently.