InCD disk formatting problems

For some unknown reason InCD no longer formats my blank CD-RWs in FS-UDF but instead labels them as UDFRDR. This prevents me from writing to them as they are now acting as Read-Only. Curiously these disks are showing Free Space as 0 bytes and Total Size as 168Kb. Disks previously correctly formatted continue to Read/Write without any problem. I have repeatedly tried uninstalling/re-installing InCD, have disabled the IMAPI facility in WinXP, but the problem persists. Any ideas???