May be a shot into the dark, but.... what if the the first member looks like it was a PDS. You surely can't nest PDSs off the shelf. But you said the program was playing around. What if it writes blocks looking like a PDS directory followed by a member data block.
I do not know how ISPF's "B"rowse option decides whether the data is a PDS or a sequentual data set and whether it can be fooled. Try to dump the dataset and analyse its content. -- Peter Hunkeler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html