Illegal division by zero at .\bin\pdkc.pl line 536.

Running .\bin\pdkc.pl at Wed Aug 26 18:37:04 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 3668

.\bin\pdkc.pl: Getting Expedition object for diveno = 3668 and rname = vnta
set_expd(): rov = vnta, diveno = 3668
set_expd(): Executing sql:
SELECT ExpeditionID_FK, DateDiff(ss, '01/01/70', DiveStartDtg), DateDiff(ss, '01/01/70', DiveEndDtg), DiveStartDtg, DiveEndDtg FROM Dive WHERE DiveNumber = 3668 AND RovName = 'vnta'

RS->Fields(0)->Value= 4617

RS->Fields(1)->Value= 1322759260

RS->Fields(2)->Value= 1322780826

RS->Fields(3)->Value= 12/1/2011 5:07:40 PM

RS->Fields(4)->Value= 12/1/2011 11:07:06 PM

set_expd(): $self->{EndDDD} = 335
set_expd(): $self->{StartEsecs} = 1322758060
set_expd(): $self->{EndEsecs} = 1322782026
set_expd(): $self->{EndDtg} = 12/1/2011 11:07:06 PM
_readLogr(): Reading videologr data from 2011335datavislogr.dat.gz. 
_readLogr(): Expedition start & stop times are 1322758060 & 1322782026
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 1322782036, self->{EndEsecs} = 1322782026
_readLogr(): #LOGHOST_SYSTEM_UTC = 2396
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 1322758061
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 1322782026
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 1322758061
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 1322782026
refineStartAndEndEsecs(): setting StartEsecs to 1322758060
refineStartAndEndEsecs(): setting EndEsecs to 1322758071
refineStartAndEndEsecs(): numMinBack = 21.8166666666667, numMinForward = -277.9
refineStartAndEndEsecs(): Refined StartEsecs = 1322757951, Refined EndEsecs = 1322764152 
_readLogr(): Reading videologr data from 2011335datavislogr.dat.gz. 
_readLogr(): Expedition start & stop times are 1322757951 & 1322764152
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 1322764162, self->{EndEsecs} = 1322764152
_readLogr(): #LOGHOST_SYSTEM_UTC = 619
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 1322757961
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 1322764152
rovnavCTDO(): calcUTM = 0
rovnavCTDO(): getRaw = 1
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 335 (looping to 335) 
Does file exist?: \\atlas\RovNavEdit\2011\vnta\nav2011335vntaedited.txt
   yes.
EXPD.pm: editNav flag = 
rovNav(): Opening ROV nav data from \\atlas\RovNavEdit\2011\vnta\nav2011335vnta.txt
esecs, east, north, lat, lon, head, pres
rovNav(): 335: -1  in tList after reading from \\atlas\RovNavEdit\2011\vnta\nav2011335vnta.txt
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovCTDO(): ROV CTDO start & stop times are   1322776155 & 1322773590
rovNavCTDO(): Looking up ROVCTDO data ('.'found, 'X' exceeds max iter.):

rovGDCListRefs(): dMedian = 
rovGDCListRefs(): dStats->sample_range = 
rovGDCListRefs(): rovDepth (paroscientific) range is less than 1.  Using rovctd calculated depth
rovNav(): 1, doNotRefineStartEnd = 1
rovNav(): 2, calcUTM = 0
rovNav(): calcUTM = 0
rovNav(): DDD = 335 (looping to 335) 
Does file exist?: \\atlas\RovNavEdit\2011\vnta\nav2011335vntaedited.txt
   yes.
EXPD.pm: editNav flag = 
rovNav(): Opening ROV nav data from \\atlas\RovNavEdit\2011\vnta\nav2011335vntaedited.txt
esecs, east, north, lat, lon, head, pres
rovNav(): 335: -1  in tList after reading from \\atlas\RovNavEdit\2011\vnta\nav2011335vntaedited.txt
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovGDCListRefs(): dMedian = 
rovGDCListRefs(): dStats->sample_range = 
rovGDCListRefs(): rovDepth (paroscientific) range is less than 1.  Using rovctd calculated depth

.\bin\pdkc.pl: -------------------------------------------------------------------------------

Position subsampling set to 1