# Message 150

## Message

"150. Error loading mask file:…"

## Description

The custom mask cannot be loaded due to illegal values, structure, or commands contained in the mask file. The <string> in the message is replaced with one of the following:

- region must be between 1 and 8
- number of vertices must be between 3 and 512
- inconsistent number of vertices
- missing end setup delimiter
- query not allowed in setup
- illegal command in setup
- missing mask header MASK_FILE_N1000X
- missing mask type identifier
- invalid data
- too many vertices

Refer to Creating Masks for a description of allowable values and file structure.

This message is displayed in the message area and is reported as a programming error message.