[QUOTE]yoann wrote dear All, I encounter an error using the modis conversion toolkit in ENVI : I try to reproject a level 3 product (originally in a sinusoidal projection) to a polar stereographic one. however I get the error message : envi_register_doit; an error occured during processing, "arrays has too many elements" the result may be invalid. does anybody have an idea why this is occuring? thanks a lot for any help, best regards Yoann[/QUOTE] Hi, I am also getting the same error appear when reprojecting from a sinusoidal to MGA 94 Zone 55. Version used is current as of 9 Aug 2011 Reprojecting same image (MOD09GA) with Geographic Lat/Long does not error. Help would also be much appreciated Simon