hatch no longer recognized in dwg

[Anonymous]

About 6 months ago created a file including a hatch pattern for brick walkways at a country club - simple. The client put the project on hold and now has come back with some revisions. I opened the file and now cannot match properties with the original brick hatch pattern to another hatched area nor does my hatch library recognize the original pattern. i've clicked on the hatch to check properties and CAD has defaulted to ANSI31. when i select the hatch pull down menu the menu gives me a white square and red slash as the swatch/sample window of the hatch. any help would be appreciated. also, CAD freezes anytime i try to edit the hatch or otherwise investigate further.

thanks.

[maxim_k]

Hi,

Looks like you don't have hatch pattern definition file (with .pat extension) from which AutoCAD can read hatch pattern creation/edition instruction. AutoCAD can show hatch created with missing .pat file, but it can not create or edit such hatches.
The only one advice could be to find missing hatch definition file and put it to AutoCAD support file search path.
So look for original .pat file, maybe you have it somewhere on your hard drive or in archive.

Maxim