Thanks for the reply.
I tried what you suggested, to no avail.
This problem occurred when I installed the software on a better computer. On my old computer I was running Windows XP..and Acoustica 2.471. On my more newer computer...the same.
My older computer: No problem saving 600mb files as an MP3. It's just when I installed it on a little bit better computer did I experience the problems saving larger. Is there anything I could try, as I really like this product ?
Thanks again Greg.