I have a similar problem: I also use NI-CAN (Vers. 2.5.2) for communication with an external device. It sends some commands to a µC and then the programm gets back some status information. Everything seems to work, but after about 2 hours, the programm crashes with the error message "memory is full". If I watch the RAM memory with the task manager of windows, I see, that Labview is reserving every 10 sec about 4k more memory (looks like a memory leakage). After some days debugging, I am sure, that the VI ncWriteNet.vi causes the Problem!!! Do I have to clear some kind of buffer, is this a known problem or is this whatever?!?
Could you please open your own thread next time. I could not reproduce your memory leak here on my machine. Could you provide a simple example to reproduce the leak, I copuld run on my system?
That would be helpful.