It turns out that most of these files were fine. Clearing the faults allowed registration to complete. The exceptions are noted below.
<pre>
mysql> select exp_id,exp_name, class_id, fault from rawImfile where fault > 0 and exp_id > 10000;
+--------+-------------+----------+-------+
| exp_id | exp_name    | class_id | fault |  reason
+--------+-------------+----------+-------+
|  13605 | c4594g0054b | ota04    |     5 |  file not present in nebulous I don't know how to fix
|  14495 | c4600g0062b | ota54    |     5 |  fine
|  14496 | c4600g0066b | ota54    |     5 |  fine
|  14496 | c4600g0066b | ota57    |     5 |  fine
|  14496 | c4600g0066b | ota60    |     5 |  fine
|  14496 | c4600g0066b | ota61    |     5 |  fine
|  14573 | c4601g0088o | ota51    |     5 |  fine
|  14577 | c4601g0092o | ota34    |     5 |  fine
|  14579 | c4601g0094o | ota14    |     5 |  fine
|  14583 | c4601g0099o | ota37    |     5 |  fine
|  14584 | c4601g0100o | ota36    |     5 |  fine
|  14735 | o4601g0039o | ota40    |     5 |  file had zero size on disk. Downloaded it again (without telling nebulous) and it was fine
+--------+-------------+----------+-------+
12 rows in set (0.00 sec)</pre>