1074126845 error at ag6000 Read Waveform.vi

Hello,
I'm acquiring signals from a scope channel, DSO 5014 A (LXI), with a program done in LabView 8.5.I'm using a LAN cable to comunicate the scope and the computer.
The program has been run properly for a few days acquiring the signals (and in fact, now is running ok) but however, I for the last 5 hours before I couldn't running it because an error appears:
"Error -1074126845 occurred at ag6000 Read Waveform.vi, Possible reason(s):
Driver Status: (Hex 0xBFFA2003) Maximum time exceeded before the operation completed.
Primary Error: (Hex 0xBFFF0015) Timeout expired before operation completed."
I don't understand what's going on because I didn't modified the program but yesterday it was working but not this morning.I tried to restart the computer, the scope, to swicht them off...but it didn't work!
Now is working, but I have no idea why!
Somebody could give me any idea?
Thanks

Hi again!
THe problem is still there!I can't understand why!
Yesterday, once I decrease the burst period, it worked well so it was measuring over night, but this morning when I arrived there was again the same problem!
I decrease the average from 256 to 16, and it works again.
But I don't know why!
About the averaging, I used an example program which was with the drivers of this scope, and the VISA session is connected to it.However, what do you suggest me?
Thank you for the help!

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1074126845 error at ag6000 Read Waveform.vi