Hi All, I'm getting a silly error when I try to inital a raster result after running a task. I'm currently using ENVI 5.3 + IDL 8.5. Below is my code. The error happens after the first file in filelist, its the second one in the batch that hangs up on e.openraster(). The error is: % Attempt to call undefined method: 'IDL_LONG::OPENRASTER'. Very weird and a bit frustrating because it runs beauifully on the first image but bombs on the scecond, I have 50+ imgs to batch through this pro. pro sieveClump compile_opt IDL2 ; start the application e=ENVI(/HEADLESS) if (e eq !null) then e = envi() ;directory definitions idir = 'P:\DASA\RemoteSensing\GC_09_13_TAMRAM\TAMRAM01_Consistent\' odir = 'E:\Output\' ;input list is classification image filelist=File_Search(idir + '*TAMRAM01') foreach file, filelist do begin ;get file base name img = file_basename(file) ;out directory and file name oNAME = odir + img ;output name fMahal = oName + 'sc3x3r' if (file_test(fMahal) eq 1) then file_delete, fMahal mahal = e.openraster(file) ; Get the task from the catalog of ENVITasks ; http://www.harrisgeospati...tionsievingtask.html SievingTask=ENVITask('ClassificationSieving') SievingTask.INPUT_RASTER = mahal ;min size for pix cluster SievingTask.Minimum_size = 11 SievingTask.PIXEL_CONNECTIVITY = 4 SievingTask.Execute ; Get the clumping task ;https://www.harrisgeospatial.com/docs/enviclassificationclumpingtask.html ; ;sets a default 3x3 square kernal d = replicate(1,3,3) e = replicate(1,3,3) ClumpingTask = ENVITask('ClassificationClumping') ClumpingTask.INPUT_RASTER = SievingTask.OUTPUT_RASTER ClumpingTask.DILATE_KERNEL = d ;default is 3x3 ClumpingTask.ERODE_KERNEL = e ;default is 3x3 ClumpingTask.OUTPUT_RASTER_URI = fMahal ClumpingTask.Execute mahal.close ;print final time ftime = systime() print, 'end ' + ftime Endforeach end