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CAD tip # 11415:

Question CAD
% platform category

Error in pattern file. Missing parameter on line XXX.

When trying to add a hatch with a selected custom hatch pattern, AutoCAD or AutoCAD LT displays the error "Error in pattern file." or "Bad pattern definition file: Missing parameter on line NNN.", resp. "Error in pattern file."

The most common primary cause is a missing end-of-line character (Enter) on the last text line in the .PAT file. Make sure the last line is an empty line - e.g. pressing Ctrl+End in Notepad should move your cursor below the last line of the pattern definition.

A .PAT file must by a standard text file, not a file edited e.g. in MS Word. Also remember that custom .PAT files should contain only a single hatch pattern definition. The individual lines of the definition may contain max. 80 characters.

ACADLT

* CAD

8.5.2017 4538×

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AutoCAD LT

applies to: AutoCAD · AutoCAD LT ·

See also:
Tip 12416:	How to export DXF outline of unfolded sheetmetal in Fusion 360, with no bending lines.
Tip 12018:	How to transfer an AutoCAD hatch pattern to Revit?
Tip 11409:	Catalog of all available hatch patterns.
Tip 11246:	Easier hatching between two polylines - Hatch2L.
Tip 10118:	How to export a DXF file with punch points from an unfold?

Selected tip: How to transfer your Plot style table to Excel?

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Contour lines on a toposurface are displayed as too thick lines. « | » Move the end-of-part (EOP) marker easily.

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