Build Crystal?

Dear all

I want to build crystal of molecule "A"

When I build it by using the following route

"Build" from manu bar

then

crystal"

then

build crystal

I found that molecule in packing/ crystal emerged.

I tried by assigning the charge but in vain

I faced a problem when I start to build the crystal.

Let me help, what to do and how to solve this problem

Thanks in anticipation

Dr Irfan