Unfortunately you don't give enough information.
How did you change the layout?
Did you change the name?
etc.
I just created with 6.50,read it and saved with 5.80 (if i remember right) and then read again 6.50.
I manage to solve the probelm by copying the panel with the views, copy to a new layout anddelete the old layout
However,if in this new saved screen make changes, it does not update when running,i have again to do the same procedure using a totally different name.
Also,instead of the emoticons i see characters like this
--> : - )
i use edit text wrap,no singleline but when press enter it does not change line
i don'tknow if it is related but when downloaded the setupfileand move it to a new directory to run installation,i got an error saying corrupt file pleasedownload again.. i installed the file from browser's download folder.