Applies To:
  • CitectSCADA v7.0
Summary:
 My Tracelog.dat file grows very quickly with an
"Object reference not set to an instance" error message.

I capped the size of the file, as documented in KB Q4810.
However, I would like to know what this error means.

Solution:
The error occurs when you are trying to write into an array from Cicode.
This is a bug which was corrected in v7.1.
Keywords:
 tracelog

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