Saving to File Problems

[Troubled at Boeing]

I'm taking data from multiple sensors and I'm trying to store it in a file. If I use the collection program as a sub vi it works but the graphed data blinks. If I use the 'save to a file' part as a sub vi it sticks in the while loop and doesnt aquire new data. Any suggestions?

[altenbach]

Could you explain in a bit more detail what the problems is. For example: "...but the graphed data blinks...": Does it just flicker, alternate between data and zeroes, etc. Or "...it sticks in the while loop...": I am not familiar with that term. Does the program stall, waiting for something? How exactly are you using the "part" as a subVI? Which part?

Maybe you could attach a small sample program that demonstrates the problem, a VI is sometimes worth a thousand words.