We have an iSeries 9406-525 V5R4. We have a job that runs in the evening submitted by ROBOT. It loops back and forth between 2 clp's. It builds small files, encasing the files, and emailing them to our branches, and then back to do the next file. Max number of files could be a couple of hundred. A month ago we started getting MCH4429 errors. No new PTF's. No machine updates. MCH4429=automatic storage overflow or storage access beyond the max size of a teraspace automatic storage stack was attempted. Has anyone else out there run into this before, or do you have any ideas? IBM seems to think it might be encase related. It is a complicated process that we are trying to avoid rewriting.