you don't need to copy everything as screenshots, those are only simpler if it is about events, error messages or the plugin manager. In all other cases stating the version number would have been enough.
One suggestion: can you make a backup of your project and try to update it to 1.5.2?
Do NOT go to 1.6.0 or 1.6.1 - the 1.6.0 has bugs, and while the 1.6.1 is the correct newest version it will change things in compatibility with plugins and more.
But 1.5.2 solved some problems of earlier versions (and was made after the buggy 1.6.0 was released, it's basically a 1.6.0 without the critical changes that were bugged in 1.6.0)
If you have the steam version that can be done in the steam program properties, beta tab.
If you have the standalone version you'll need to search the 1.5.2 update topic here on this board to get the correct installer.