MODULE: images.imcombine, ccdred.combine (and related scripts)
SYSTEM: V2.10.2
NUMBER:	197
MODULE:	images.imcombine, ccdred.combine (and related scripts)
SYSTEM:	V2.10.2
DATE:	Wed Jan 20 15:54:28 MST 1993
FROM:	valdes

BUG:	When reject=[avsigclip|sigclip|ccdclip|crreject|pclip], combine=average,	mclip=yes, and nkeep!=0 there is a rare possiblity of a segmentation
	error.  This is more likely the fewer pixels are allowed to be
	rejected.  This occurs in the step where the pixels with the lowest
	residuals are added back after too many are rejected and the
	pattern of rejections is such that only low pixels have been rejected.
	The sure workaround is to change the combine option to a median
	or mclip=no.  However, changing other parameters such as nkeep,
	the sigma thresholds, or the combining algorithm is likely to
	avoid the problem.

STATUS:	Fixed for V2.10.3.

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