DVD Lab Pro Error: "Read data size is over the buffer limit"

[Motinha]

Hi

I'm trying to convert an mp4 file into a DVDR and introduce subs on it.
I'm using WinAVI v10.1 to convert the mp4 file in VOB. The original aspect R for the video is 16:9 720p. I want to keep this resolution or similar. After convertion everything is fine and the VOB files are working properly in my DVD player.
I make an ISO image of the DVD and start using DVD Decrypter to demux the video and audio files.
After this I load the demuxed files to DVDLab Pro v2.51 so I can add the subtitle.
When I hit COMPILE DVD I get the following error:

"The Read data size is over the buffer limit"

This makes the compiling to stop.

I have tried many different settings in converting the mp4 file to VOB.
I believe that's where the problem starts since I have been using this method (DVD Decrypter + DVDLab) for a long time and it never happened before.
The demuxed M2V file that I get with DVD Decrypter after the whole process before I start working in DVDlab is usually higher than 2000 kbps.

Anyway, it's important to mention that I used to do this procedure with a Core 2 Duo @ 3.80 Mhz / 4 GB DDR2 and now I'm using a Core 2 Duo @ 1.68 Mhz / 768 MB DDR2 so it might be a memory problem as well.

TY in advance for Ur support