While migrating the project which is created on previous version of NeoLoad and now while opening with current 5.1.3 version following error occurred :

com.neotys.nl.controller.config.h.MigrationException: Can't create a backup file of the original file "C:\Users\ABC\Documents\NeoLoad Projects\XYZ\config.zip".
at com.neotys.nl.controller.config.h.a.d.a(d.java:115)
at com.neotys.nl.controller.config.h.a.e.b(e.java:40)
at com.neotys.nl.controller.config.h.a.n.a(n.java:38)
at com.neotys.nl.controller.config.hb.b(hb.java:895)
at com.neotys.nl.controller.config.hb.a(hb.java:830)
at com.neotys.nl.controller.config.hb.a(hb.java:809)
at com.neotys.nl.gui.wf.a(wf.java:1494)
at com.neotys.nl.gui.a.o.run(o.java:33)
Caused by: java.io.IOException: Failed to backup config file, please see logs for further details
at com.neotys.nl.controller.config.h.a.d.a(d.java:112)
... 7 more