Maybe try some different software? There's a free version of Nero which will do simple CD/DVD burning.
I personally wouldn't entrust my data to a rewritable disc anyway though. I did that once a few years ago, and when I went to read the data back from it, the disc was unreadable (this was despite the writing process completing successfully).
Windows 7 x64 Ultimate Edition, Gigabyte Z77-D3H, Ivy Bridge i7 3770, nVidia GTX480 1.5Gb, 16Gb Corsair 1600MHz, Creative X-Fi, Seagate 500Gb SATA II, DGM 23" Widescreen TFT
"Men never do evil so completely and cheerfully as when they do it from religious conviction" -Blaise Pascal