ParseFEP error

From: Sadegh Faramarzi Ganjabad (safaramarziganjabad_at_mix.wvu.edu)
Date: Sat Feb 17 2018 - 23:39:52 CST

Hello,

I have run a FEP calculations for 16 lambdas, each 20 ns long. I'm trying
to analyze the results on ParseFEP on VMD (1.9.2), and keep getting the
following error. Does anybody know why I'm getting it?

integer value too large to represent as non-long integer
integer value too large to represent as non-long integer
    while executing
"read $infile $size "
    (procedure "::ParseFEP::normal_parse_log" line 25)
    invoked from within
"::ParseFEP::normal_parse_log $::ParseFEP::fepofile forward "
    (procedure "namdparse" line 155)
    invoked from within
"namdparse"
    (in namespace inscope "::ParseFEP" script line 16)
    invoked from within
"::namespace inscope ::ParseFEP {

if { [string length $::ParseFEP::fepofile] < 1 } {
tk_dialog .errmsg {NamdPlot Error} "No FEP (inward) logfile ..."
    invoked from within
".parseFEP.runbutton invoke"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 [list $w invoke]"
    (procedure "tk::ButtonUp" line 22)
    invoked from within
"tk::ButtonUp .parseFEP.runbutton"
    (command bound to event)

Thanks in advance,
Sadegh

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