Rebecca,

I have 2 suggestions based on my assumptions since you did not elaborate on what environment you are having your P3, network or single user.
1. If you are logging on a network before you open your P3, it is most likely that you don’t have a read and write access to the P3WIN directory or any of its subfolders. So, first you have to log into your computer as an administrator, we call it local administration, and go to windows explorer, right click the P3 directory and choose sharing and security on the pop-up. Add your Network ID or make sure your network ID has all the access enabled for these directories. Then you can go back to the network and restart P3.
2. If it is single user, check your P3.ini located on Windows directory and see if the WORKLOC directory is beyond 54 characters from the root directory. P3 was created in the 90’s when DOS was still one of the reigning OS. So it means it follows the 8+3 rule of filenaming and other limitations. Make sure that the directory listed is as near as possible to the root directory, that is from C:\ Many errors in P3 are caused by these limitations since we’re already used with the new Windows OS’s wherein you can almost create a folder with endless description. My suggestion is, in using P3, try to minimize your folder names to 8 characters, same goes with filenaming.
Hope this helps.. and remember, deadlines will always be there, get used to it... Cheers,