ERROR : The start-point layer contains no legal point.

[GulistanB]

Hi Guys, I searched everywhere but could not found a proper resolution. I constantly got the error "The start-point layer contains no legal point." whenever I run this plugin I am %100 sure that I have starting point (and of course end point) , I tried with different versions of QGIS , different rasters, different points. Any idea ?

[biship]

EDIT: The Shapefile layer has to be a multipoint, not point.