Excel spreadsheet application with VBA

[Noel]

Hello there,

I developed a spreadsheet application, the size of which
is 6MB.

It consists of about 2000 lines of VBA code.

When I try to open it in some computers, the VBA project
gets deleted and all the objects placed on the worksheets
are turned images.

I could not find any solutions in the microsoft website
and I am not able to figure out why this is caused.

Could anybody advice on this please.

Thanks.

Noel