What is the best/fastest method for saving 2 dimensional arrays to files. I've tried WRITE FILE / READ FILE but it doesn't seem to like my arrays - DIM gData(40,600) - when I come to read them back (they write out ok). I've tried reading in the data back to handle and then BLOCKMOVE the data but FB must detect this as potentially dangerous and halts (without an error message). My current method of PRINT / INPUT is really very slow. I suppose I could copy all the data into a temporary one dimensional array and copy that... I haven't tried that... Any other suggestions? Andy