Opening Units

Hello Everyone,

I have been struggling with a Delphi 1.0 and 2.0 problem:

Try the following:

1) Create two forms.
2) Save the one unit as DC_INST and the other as DC_IN_P.
3) Now try open DC_INST using the open unit list. It is greyed out.

I suspect that it could cause some other problems I have been
experiencing.

Can anyone tell me what would cause this.

Thanks in advance.