Error: Backup aborted. Reason:

List index out of bounds (-1)
I have received this message on two completely separate installations on two computers running XP at distinct work locations. I am trying to backup a flash drive with about 12 gb data onto the c: disk. The first installation was a "full" backup and successfully created the first backup, but afterwards it displayed this error. The second was a "mirror" backup and never successfully completed the initial backup.
I can't supply the entire log since file names have confidential information. Here are relevant parts. I substituted LNAME FNAME for an actual name in this log:
[2/23/2012 1:13:56 PM] FBackup 4.6.263

[2/23/2012 1:13:56 PM] Search for "Warning: " and "Error: " to locate warnings and errors in this log file

[2/23/2012 1:13:56 PM] Starting backup for "Toshiba_16_mirror" at 2/23/2012 1:13:56 PM

[2/23/2012 1:13:56 PM] Operating system: Windows XP Professional Service Pack 3 (build 2600)

Processor[0] : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz

Processor[1] : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz

Physical memory (free/total) : 1200 MB/2004 MB

Display (res/color/DPI) : 1024X768/32 bit/96

System font (name/height/size/charset) : Tahoma/-11/8/1

Admin/BkPriv/RePriv : False/True/False

IsWOW64 : False

Locale : English (United States)

[2/23/2012 1:13:56 PM] Checking if the drives of the sources exist

[2/23/2012 1:13:56 PM] Checking backup destination (Local hard drive)

[2/23/2012 1:13:56 PM] Creating the list of files to backup

[2/23/2012 1:13:56 PM] Found folder E:\Secretary_screening_interview

[2/23/2012 1:13:56 PM] Found file E:\Secretary_screening_interview\Backup of Secretary Interview Questions 2012_jd_20120206.wbk

[2/23/2012 1:13:56 PM] Found file E:\Secretary_screening_interview\Backup of Secretary Selection and Screening Criteria 2012_OPMS.wbk
CONTINUED IN NEXT POST

CONTINUED FROM PREVIOUS POST
AFTER THIS ALL FILES ARE RECORDED WITH COMPLETE PATHS. THE NEXT STRANGE THING I NOTICE IS MACHINE LANGUAGE APPENDED TO A FEW FILE NAMES:
[2/23/2012 1:13:57 PM] Found folder E:\Hosp_Centers\MPC\LNAME FNAME\Clinical Notes

[2/23/2012 1:13:57 PM] Found folder E:\Hosp_Centers\MPC\LNAME FNAME\Clinical Notes\.p║Ñ

[2/23/2012 1:13:57 PM] Found folder E:\Hosp_Centers\MPC\LNAME FNAME\Clinical Notes\b░%═!9)

<

"╓.Éh
THEN WE NEAR THE END AS THE MACHINE LANGUAGE STOPS FOR TWO FILES

BEGINS AGAIN FOR TWO FILES, AND THE PROCESS ENDS [NOTE:I LOST THE LOG!! THIS IS

FROM A LOG CREATED 10 MINUTES EARLIER]
[2/23/2012 1:03:42 PM] Found folder E:\Hosp_Centers\MPC\LNAME FNAME\Administrative

[2/23/2012 1:03:42 PM] Found folder E:\Hosp_Centers\MPC\MPC_RAI_meds

[2/23/2012 1:03:42 PM] Found file E:\Hosp_Centers\MPC\MPC_RAI_meds\

─

[2/23/2012 1:03:42 PM] Found folder E:\Hosp_Centers\MPC\MPC_RAI_meds\α╡ÄKc5σ.'\ê

[2/23/2012 1:03:42 PM] Close catalog file "C:\Documents and Settings\dillonj\Application Data\Softland\FBackup 4\fkcFiles\Toshiba_16_mirror.fkc"

[2/23/2012 1:03:42 PM] Error: Backup aborted. Reason:

List index out of bounds (-1)

Backup aborted at 2/23/2012 1:03:42 PM with 1 error(s), 0 warning(s)
WHAT'S UP????`

Hi,
What is with the strange file names?

Do you have the same problem if you use an administrator account?