format, so it is not possible to run LyX 1.4.x and 1.5.x with the same
personal configuration directory.
+The list of recently open files is now stored in a different location.
+It will therefore be reset when upgrading from LyX 1.4.x.
+
The format of the layout files has also changed, but LyX 1.5.x uses a
converter layout2layout.py written in python that will convert old layout
files on the fly (see below, section "Document transfer").