SYSTEM: V2.11-V2.11.3
NUMBER: 529 MODULE: imcombine SYSTEM: V2.11-V2.11.3 DATE: Mon Aug 11 12:13:29 MST 2003 FROM: valdes BUG: When specifying a bad pixel mask output with the 'plfile' parameter it is possible to get Warning: Operation would overwrite existing image (.pl) This occurs when a problem is encountered and the task tries again with a different parameters to avoid the problem. The bug is that the pl file is not deleted before tryng again. This retry behavior occurs for several reasons, most commonly when the number of images being combined exceeds a limit of about 250 images. The workaround is to 'reset imclobber=yes'. Note that this resets the clobber policy for all IRAF tasks so one should probably reset it to 'no' after working around this IMCOMBINE bug. STATUS: This is fixed in V2.12.