Bad vi after power off

sometimes LV can't open VI if system crushed (power off) when this VI is opened by LV
this trouble appear not every time.
I had experimented with this trouble and not found any rule (about dozen attempts and no problem with vi)
But yesterday I was on customer object and system crushed (power off) twice. After second crush I had found that can't open main VI (attached).
This error was in LV6 (my first version), in LV7 fnd now in LV8 (8.3)
I'm not sure, but may by bad file is smaller than correct file (from backup).
Why this happen and how can I avoid this error?
Attachments:
data_processing.vi ‏231 KB

Hi Artem,
I would not call it a LV-error when you switch-off (or crash) your pc while working... How should LV prevent from crashing?
There is no other answer than 'save early and often'! And starting from LV8 there is an auto-save option similar to MS Office (save every x mins)!
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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