Assume that you collected data smoothly...
If you moved result directory to other place, orchanged source/binary directories, use amplxe-gui to open result. Then click on "Analysis Type" tab -> click on "Project Properties" button to pop up a dialog -> click on "Search Directories" to add paths for source files and binary files -> close the dialog -> click on "Re-resolve" button to do finalizing again.
Youcan display source after doing above.
If this is your big executable specific issue, my opinion is to visit https://premier.intel.comto submit a ticket with VTune Amplifier XE results, binary, associate source (you want to display functions)