Found the problem. I had 4 records with an extra $ in subfield b. Sorry for the false alarm. Lezlie From: Shell, Lezlie Sent: Monday, February 15, 2016 3:57 PM To: koha@lists.katipo.co.nz Subject: MarcEdit Error Message I was doing the last step of preparing my records for importing (re-re-re-importing) my records into our new Koha db. I was using Swap Fields to copy the 050ab to the 942$h and got this error message: Index was outside the bounds of the array. Since I have no idea what that means, I thought maybe my file of 118k records was too big, so I split it into 5 files and did a happy dance when the first group of 25k records did the swap with no problem. But, the second file, did not work, so I split that and one of those worked. For the one that didn't I used Swap Fields and copied 260ab to 942h and it worked. So, there must be a problem with one or more of the 050 fields? Can someone please give me some idea of what I should be looking for in my 050 tag? I was so close. Thanks, Lezlie