luuk

hi! I'm building a dll file to fit some measurement data. To test the routine I use some sets of measured data, the strange thing is when I fit the same data a couple of times, so press the fit button a couple of times to start over and over. Labview is saying the call library function node threw an exeption. I've read on the fora that this can occure when deviding by 0 of take the sqrt of an negative number, but since the input is the same all the time this can't be the case. Anyone a suggestion what it could be? I'm using the calloc and free function. thanks!