15.5如何创建flash?

和原来的不一样了，新建flash symbol的时候要选择package configuration desired，
随便选一个进去后，add->flash无法添加，提示如下，好像层设置不对，可是也找不到在什么地方设置，
谁给解答一下啊
E- Unable to set constraint for TOP_COND due to: Scaled value has been rounded off.
E- Unable to set constraint for VDD due to: Scaled value has been rounded off.
E- Unable to set constraint for VSS due to: Scaled value has been rounded off.
E- Unable to set constraint for BOT_COND due to: Scaled value has been rounded off.
W- Scaled value has been rounded off.
ERROR - Could Not Generate Shape
W- *WARNING* (axlDBCreateOpenShape): No match for subclass name - "etch/top"
ERROR - Could Not Generate Shape
W- *WARNING* (axlDBCreateOpenShape): No match for subclass name - "etch/top"