The version is up to date (5.2.6.1) running on an XP SP2 box. The program will read from any DVD-9 disc with no problems, but when writing it does not recognize the burner's ability to burn a DVD-9 disc, which generates the following error message:

Not enough space on the target medium!
Space required 7795 MBytes
Space Available: 4482 MBytes

The burner in question is an external MagicSpin IDVD16DDBE (model #: DVDRW 1016ui manufactured: 09/2005).

I receive the same results with CloneDVD2 2.8.5.1, which will also read DVD-9 discs from this drive with no problems, but will produce the following similar error when trying to write:

Writing to video media was not successful:
source data too large
This writer is not capable of writing the source data as requested.
To write these files...
Details: WriteDVD 14 W2

I can burn single layer DVDs with no problems and I can also burn DVD-9 discs using Nero 6.6.0.8 without incident using the same Memorex DVD+R DL blanks. Aside from the obvious and costly solution, any suggestions on how to make my current burner work? Thanks in advance.