Dear Sirs, I'm having some difficulty to understand this error showed during PTM neighbor file process. Would it be caused by mesh size or geometry configuration? Please, I'd appreciate any help with this problem. Thanks, Taoan PTM Version 2.0 Build 060 (28/Jan/2011) Run start: 2011/09/30 12:37:44 Reading program control file... Reading ADCIRC mesh data... Reading boundary data... Creating closed boundary element list... Creating open boundary element list... Reading sediment data file... Opening hydrodynamic data file... Computing areas of elements... Neighbors file corrupted >>> Need to create new element neighbor list... Checking element neighbors... 1000 of 14726 elements 2000 of 14726 elements 3000 of 14726 elements 4000 of 14726 elements 5000 of 14726 elements 6000 of 14726 elements 7000 of 14726 elements 8000 of 14726 elements 9000 of 14726 elements 10000 of 14726 elements 11000 of 14726 elements 12000 of 14726 elements 13000 of 14726 elements 14000 of 14726 elements Creating element neighbor lists... 1000 of 14726 elements 2000 of 14726 elements 3000 of 14726 elements 4000 of 14726 elements 5000 of 14726 elements 6000 of 14726 elements 7000 of 14726 elements 8000 of 14726 elements 9000 of 14726 elements 10000 of 14726 elements 11000 of 14726 elements 12000 of 14726 elements 13000 of 14726 elements 14000 of 14726 elements forrtl: severe (157): Program Exception - access violation Image PC Routine Line Source ptm.exe 00406905 Unknown Unknown Unknown ptm.exe 00419C65 Unknown Unknown Unknown ptm.exe 004890A7 Unknown Unknown Unknown ptm.exe 0047A443 Unknown Unknown Unknown ptm.exe 00670BC3 Unknown Unknown Unknown ptm.exe 0063BA89 Unknown Unknown Unknown kernel32.dll 75B2339A Unknown Unknown Unknown ntdll.dll 77C39ED2 Unknown Unknown Unknown ntdll.dll 77C39EA5 Unknown Unknown Unknown