Failed To Open This File when Attaching in email

I am using my cell phone which I have the skydrive app installed on. I am using Gmail. I was using yahoo but changed everything over to gmail since it woudl not work there either. I thought I tried and it worked on Gmail but I guess not. I can open the files on my phone but when I go to attach them I choose skydrive and select the file (pdf) or (rtf), and it says :Failed to Open This File and I can not attach the files! How do you fix this? I have tried taking out periods in file name, I have tried shortening the file names and nothing. File name is Administrative.Resume.Danielle.Capron or AdministrtaiveResume NOTHING!!!! Very frustrated as I am trying to apply for jobs here!