Unable to view form in 11g

Hello all,

I am new to forms 11g. I have a form that needs to be updated, when I pull it from the server and try and open it in formsbuilder, It shows blank or only has a dummy canvas. Im told it may be web based. How can I retrieve the web base form. Also, when I try to open any form in my newly installed forms builder 11g. I get warnings of missing forms like appstand and pll files. How do I add these?