Write to Measurement File Notification Appeared Suddenly

[bens14]

Hai, I am doing temperature measurement with thermocouples.  While the program was running, the program worked fine and I got the temperature of the samples and automatically save to lvm file. But, then suddenly the "Write to Measurement File" error notification appeared and it makes my program stop running. The error notification said that my lvm file was already open but I didn`t do anything. Do you know what caused it? and how to solve the problem?  Thank you

[altenbach]

The program will only stop running if you don't handle errors and automatic error handling is enabled.

Instead of attaching 4+MB of blurry screenshots, please attach the VI instead.

Did you open the file in another application while the program was running?

(Who wrote the code? Many things seems very questionable)