In class hudson.plugins.persona.xml.XmlBasedPersona, method findImage(), line 63 stands:

  return imageBasePath+'/'+baseName+ext;

but imageBasePath already has a trailing slash(/), this adds a double slash (//) at the file name and makes the following error happen:

XmlPersonaFin E Faied to load a persona from file :/D:/HudsonHome/persona/xyz/persona.xml
java.io.IOException: No image found that matches file :/D:/HudsonHome/persona/xyz//success.*

Also check line 98:
throw new IOException("No image found that matches " + imageBase + "/" + baseName + ".*");