erase error

I use J-flash arm with LPC2210 and SST39VF1601.I can connect targe right .

when I erase the chip,pop up error dialog,such as failed to erase sector 1.if I run the chip erase again,the error will be failed to erase sector 2. The sector number increment.

if i only erase one secotor,no problem.someone could give me a answer,thanks!

thank you!when I used 3.80a,found this problem.Now,I use 3.80c,the problem is still exist.
I think the LPC2210.jflash is not suitable ,when I use the project ,I can't connect the flash.
I modify the CPU init sequence
from

0 reset 1 0ms
1 write 32bit 0xe01fc040 0x00000003

to

0 reset 1 0ms
1 write 32bit 0xe002c014 0x0f814914
1 write 32bit 0xffe00000 0x1000ffef
1 write 32bit 0xffe00004 0x1000ffef

and I select manually flash device (SST16VF1601),then I could connect SST16VF1601.but found the erase chip problem .

I use LPC2210+SSTVF160,with the same project config,NO problem,just the CFI information can't be readed.