Lines and Shapes acting up

I have no idea what happened. About an hour ago I tried to program a button and I received an message stating no memory. I decided to close everything down and reboot my computer (no way can I be out of memeory). When I reopened the title it was corrupted. I last everything after the page I was working on and can see the corruption on the page I was working on. Not very happy at this moment. The only way I can I know of to fix this is rework...Go back to the original title (of which I have a copy), import the new stuff I have, and recreate what I lost. If I open a title created in Lectora 2005 or 2007 in Lectora 2008 is there anything special that I need to do?I have no idea what happened. About an hour ago I tried to program a button and I received an message stating no memory. I decided to close everything down and reboot my computer (no way can I be out of memeory). When I reopened the title it was corrupted. I last everything after the page I was working on and can see the corruption on the page I was working on. Not very happy at this moment. The only way I can I know of to fix this is rework...Go back to the original title (of which I have a copy), import the new stuff I have, and recreate what I lost. If I open a title created in Lectora 2005 or 2007 in Lectora 2008 is there anything special that I need to do?