why my program runs on one machine, but it does not on a remote machine

[plant]

Hi,

This is my situation:

1) On my local PC:
I have AppServer running. Smart Object A(file_A) calls Smart Object B (file_B) by running constructObject

RUN constructObject (
INPUT file_B,
INPUT frame frame_a:handle,
INPUT '':U,
OUTPUT vhViewPrg ).
notes: file_b is to create smart object B; frame_a is a frame in Object A;
vhViewPrg is a handle to the procedure file_b.

frame_a in smart object A is a frame which will parent smart object B. Smart Object B displays some data from database.

Everything runs fine on my PC.

2) On remote PC
If I move the same code to a remote PC, run the same program via Citrix, smart object never shows up.

Any help will be appreciated.