For SDF tables which have many items and therefore are being paged, we found that selecting the "Sort on Substring" option crashes the EPICS process with the segfault error 4. This was the cause of the restarts of h1susetmy, h1susitmy, h1susitmx, h1isiham6 and h1odcmaster this afternoon. Some of these restarts were to verify the error. Initial testing on the DTS against RCG-trunk is not showing the error. FRS ticket 3330 has been opened.