I've got a custom designed board with an LPC2388. Programming Flash memory fails via the ULink2 JTAG and Flash Magic. I am able to connect to the device, read the JTAG ID through the ULink config window. uVisions "Flash Erase" and "Download" commands fail with the "Flash Erase Failed" error. Going into Debug causes uVision to throw a "Contents Mismatch error: expected..." message but afterwards I can manually read and write registers, toggle I/O pins, and manipulate RAM. We built 5 of these boards adn two are working well, but the last three exhibit this behavior. Could this be a JTAG configuration issue? At least one of these boards was previously working. Any ideas?