arw2arl error

[ronmcdo]

I get this application error message when running arw2arl:

Assertion failed: offset >= 0, file posixio.c, line 465
Assertion failed: offset >= 0, file posixio.c, line 465
while executing
"exec $exec_dir/arw2arl.exe $data_file >STDOUT"
(procedure "xtrct_data" line 37)
invoked from within
"xtrct_data $gdir $gbase"
invoked from within
".arwarch.bot.save invoke"
("uplevel" body line 1)
invoked from within
"uplevel #0 [list $w invoke]"
(procedure "tk::ButtonUp" line 24)
invoked from within
"tk::ButtonUp .arwarch.bot.save"
(command bound to event)