nero 6 ultra error- internal error

Hello-
I have been using nero 6 ulta edition, and recently I have received the error "internal error" when my DVD is almost done being encoded (before the burning process starts). Here is the error. BTW, I only get this error sometimes, sometimes it works. Any help is appreciated!

********** Nero Recode 2 **********

Version: 2.1.1.20



Serial Removed

Project type: Copy entire DVD
Target size: DVD5 (2282925)

Burn settings:
Target: HL-DT-ST DVD+RW GCA-4040N
Number of copies: 1
Write speed: 0 KB/s
Temp folder: C:\Documents and Settings\Jessica Snowden\My Documents\nero (36694568960 bytes free)
Direct burning: false
Target media: DVD+R/RW, DVD-R/RW, DVD-RAM, DVD+R9 Double Layer
Shutdown when finished: false
Advanced Analysis: false
Compress Adaptive: true

20:42:00 File burn_dvdfiles.cpp, Line 231
Compile DVD: init

VMG Menus Vobs [111 vobus] 1.36MB -> 1.07MB [R 0.26]
Video: 0.85MB, extra: 0.22MB
Audio: 0 streams
Subpicture: 1 streams
0. 0. Unspecified 0.01MB [enabled]

VTS_01 Menus Vobs [190 vobus] 31.08MB -> 22.12MB [R 0.26]
Video: 19.64MB, extra: 2.48MB
Audio: 1 streams
0. 0. Dolby Digital 2-ch Unspecified 2.05MB [enabled]
Subpicture: 1 streams
0. 0. Unspecified 0.07MB [enabled]

VTS_01 Title Vobs [20280 vobus] 7947.90MB -> 4415.00MB [R 0.26]
Video: 4126.64MB, extra: 288.37MB
Audio: 1 streams
0. 0. Dolby Digital 2-ch English 235.27MB [enabled]
Subpicture: 3 streams
0. 0. English 13.49MB [enabled]
1. 1. Spanish 11.12MB [disabled]
2. 2. French 10.58MB [disabled]

VTS_02 Menus Vobs [1 vobus] 0.01MB -> 0.01MB [not compressable]
Video: 0.01MB, extra: 0.00MB
Audio: 0 streams
Subpicture: 1 streams
0. 0. Unspecified 0.00MB [enabled]

VTS_02 Title Vobs [50 vobus] 13.73MB -> 8.57MB [R 0.26]
Video: 7.93MB, extra: 0.64MB
Audio: 1 streams
0. 0. Dolby Digital 2-ch English 0.54MB [enabled]
Subpicture: 0 streams

VTS_03 Menus Vobs [1 vobus] 0.01MB -> 0.01MB [not compressable]
Video: 0.01MB, extra: 0.00MB
Audio: 0 streams
Subpicture: 1 streams
0. 0. Unspecified 0.00MB [enabled]

VTS_03 Title Vobs [47 vobus] 21.83MB -> 11.70MB [R 0.26]
Video: 11.10MB, extra: 0.60MB
Audio: 1 streams
0. 0. Dolby Digital 2-ch English 0.51MB [enabled]
Subpicture: 0 streams

20:42:00 File burn_dvdfiles.cpp, Line 1153
Compile DVD: begin copy 1

20:42:00 File burn_dvdfiles.cpp, Line 480
Compile DVD: burning 2282925 sectors (2282925 required)

20:42:00 File burn_dvdfiles.cpp, Line 525
Compiling DVD Volume started

20:42:01 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VMG Menus Vobs

VMG Menus Vobs:
Original 1.36MB -> Expected 1.07MB -> Output 1.07MB
Finished error -0.00MB
Ratio encoded = 0
Original encoded = 101
Slide encoded = 10
StillImage encoded = 0
Output extra size = 0.22MB
Source video size = 1.14MB
Pictures Modified [I 102] [P 0] [B 0]

20:42:16 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VTS_01 Menus Vobs

VTS_01 Menus Vobs:
Original 31.08MB -> Expected 22.13MB -> Output 22.13MB
Finished error 0.00MB
Ratio encoded = 90
Original encoded = 88
Slide encoded = 12
StillImage encoded = 0
Output extra size = 2.48MB
Source video size = 28.60MB
Pictures Modified [I 190] [P 361] [B 898]

20:58:33 File NeroRecorder.cpp, Line 589
Added extra file VTS_01_2.VOB

21:14:09 File NeroRecorder.cpp, Line 589
Added extra file VTS_01_3.VOB

21:29:53 File NeroRecorder.cpp, Line 589
Added extra file VTS_01_4.VOB

21:45:11 File NeroRecorder.cpp, Line 589
Added extra file VTS_01_5.VOB

21:49:17 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VTS_01 Title Vobs

VTS_01 Title Vobs:
Original 7947.90MB -> Expected 4415.00MB -> Output 4415.02MB
Finished error 0.02MB
Ratio encoded = 20278
Original encoded = 1
Slide encoded = 1
StillImage encoded = 0
Output extra size = 291.39MB
Source video size = 7632.96MB
Pictures Modified [I 21288] [P 68348] [B 157299]

21:49:19 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VTS_02 Menus Vobs

VTS_02 Menus Vobs:
Original 0.01MB -> Expected 0.01MB -> Output 0.01MB
Finished error 0.02MB
Ratio encoded = 0
Original encoded = 0
Slide encoded = 1
StillImage encoded = 0
Output extra size = 0.00MB
Source video size = 0.01MB
Pictures Modified [I 1] [P 0] [B 0]

21:49:26 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VTS_02 Title Vobs

VTS_02 Title Vobs:
Original 13.73MB -> Expected 8.57MB -> Output 8.54MB
Finished error -0.01MB
Ratio encoded = 47
Original encoded = 3
Slide encoded = 0
StillImage encoded = 0
Output extra size = 0.66MB
Source video size = 13.07MB
Pictures Modified [I 45] [P 225] [B 276]

21:49:26 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VTS_03 Menus Vobs

VTS_03 Menus Vobs:
Original 0.01MB -> Expected 0.01MB -> Output 0.01MB
Finished error -0.01MB
Ratio encoded = 0
Original encoded = 1
Slide encoded = 0
StillImage encoded = 0
Output extra size = 0.00MB
Source video size = 0.01MB
Pictures Modified [I 0] [P 0] [B 0]

21:49:35 File burn_dvdfiles.cpp, Line 1059
Compile DVD: finished VTS_03 Title Vobs

VTS_03 Title Vobs:
Original 21.83MB -> Expected 11.70MB -> Output 11.71MB
Finished error 0.00MB
Ratio encoded = 45
Original encoded = 1
Slide encoded = 1
StillImage encoded = 0
Output extra size = 0.59MB
Source video size = 21.24MB
Pictures Modified [I 50] [P 184] [B 432]

21:49:35 File burn_dvdfiles.cpp, Line 382
Internal error.

21:49:35 File burn_dvdfiles.cpp, Line 383
Compiling DVD volume failed

21:49:35 File burn_dvdfiles.cpp, Line 300
Compile DVD: exit

21:49:35 File burner.cpp, Line 875
Internal error.