Good day, I have been using lyx 1.5 version to type up my journals for the past few months. However I have asked someone to assist me in typing and I told them to download lyx from the internet. Unknowing to me, that there were different versions available on the internet, the person downloaded LyX-1.6.3-1-Installer.exe When they were finished downloading and typing up the document I gave them they sent it to me. I was unable to open the document using lyx 1.5. What I need help with is the following: Can I do something to make the newer version of lyx to work with lyx 1.5. Right now when I try opening the file it is saying ''cannot convert etc etc''