modification of pending order failed [Invalid parameters]

[[Deleted]]

i'm going crazy

i have an EA that is working on demo account, on 6 cross

it works with no error then after some minutes and some operation (about 30 minutes, about 20 operations) i get this error

2008.03.21 12:40:44 '5014086': modification of pending order #1643977 buy limit 0.10 EURGBP. at 0.7784 sl: 0.7774 tp: 0.7787 -> price: 0.7785 sl: 0.7775 tp: 0.7788 failed [Invalid parameters]

mainly on EUR GBP

there is no way to modify or delete the pendig order, even manually i got the same error

any help?

david