Node reference: this post can't be referenced

Hello
Today I ran into a problem when using node_import-6.x-1.x-dev
When importing from a csv file, one of the cells contains a list of node references separated by pipe characters "|" ( I tried both using node titles or node ids in this list but it didn't make a difference).

In step 6, i get "this post can't be referenced" error message, even thou the values dumped by node_import are correct.
I didn't have the time to fully trace the problem, it just worked for me commenting away line 1865 in node_import.inc
This is the line performing the validation of the information ( as the dumped message after the error was happening was displaying the correct values, i just thought i might try it, and it works).

I hope this information helps.