#67 parse error - Line 1: Java.Lang.

[Alfredo39]

I have:
WinXP Pro
java 1.4.1.07
NWN 1.29_Italian
Character Creator v.1.2 with PCpack V1.hak
Whenever I get to the step "CLASS" in char creation I
receive message: "Parse Error - Line 1. Error Returned:
Java.Lang.NumberFormatException: Null". What can I do?
Now some hypotheses:
1) Before using the old version I had tried with java
1.4.2.03 but the results had been just the same.
2) Reading the pack tutorial I was not sure about where
I should put the three "erf.files". In the end I copied just
the "combo.erf" both in the "hak" and the "texturespack"
nwn file.
3) In case "Lang" is the problem, could I fix it by just
unloading the old standard NWN 1.29 English update?