>Hi Friends
>
>I got the message above occasionally, I can not Build the project
>For me the only way to correct this is to create a new project and copy all to this project. Is there a better way.
>
>What could be the reason
>
>"Memo file c:\.......\Project_name.pjt is missing or is invalid
>
>Thanks in advance

It's actually quite simple. Create a new project and add your Main program. Then click the Build button. You may have to Locate a few files, but it should pull everything in.