Lpc2000

For a good while now, I've been programming new lpc2114s with the 
Philips ISP Flash utility without problems. 

Until renctly, I just received an lpc2114 unit that only works 
partially with the ISP Utility. 

Only a few commands work OK:
- Read Part ID & Boot Loader ID (version reads 1.64)
- Blank check (Device/sectors) (returns device/selected sectors 
blank)

However, attempting to program the chip doesn't work:
- Upload to Flash
- Erase (Device/Sectors)
both commands return Cmmunication Errors at first instance

I'm interesting to know if anyone came across this problem. I'm not 
sure if either there's a way around it or I'm dealing with a faulty 
chip (bad bootloader).

thanks,
Leighton