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.

ACADACLT

*CAD

8.5.2017 14777×

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applies to: AutoCAD · AutoCAD LT ·

See also:
Tip 14503:	Compare the performance of creating arrays/patterns in Inventor.
Tip 14163:	How to select DWG texts containing a certain number of characters?
Tip 13802:	Dual-color hatches in AutoCAD.
Tip 13040:	iLogic - display information about complexity of an Inventor part.
Tip 12416:	How to export DXF outline of unfolded sheetmetal in Fusion 360, with no bending lines.

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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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