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Error: Assertion 'Number of bits in range' failed at line 351 of file '../base/bitmap.c'

Error Message

When adding a Theme to a View, opening a Project, or turning on a Theme ArcView returns the error;

Stop: Assertion "Number of bits in range" failed at line 351 of file "../base/bitmap.c"

Cause

The shapefile is corrupt.

Solution or Workaround

Restore the shapefile with a back up copy. If no backup copy is available you may have luck repairing the shapefile with the Shapechecker utility. Andrews ArcView Page has a utility to do this (see link under Related Information). Click 'How to / Useful' on the left and then ShapeChecker. Follow Andrew's instructions to download and use the utility.

Warning:
The ShapeChecker Utility is a third party application and is not supported or guaranteed by ESRI. We recommend backing up your files before performing any operation with this utility.


Note:
To avoid future file corruption refer to the 'Maximize your system's resources . . .' document under Related Information.

Related Information