Comment 4 for bug 1170585

I'm just a regular naxsi user like you are and not developer/maintainer ... but here's my take on the issue:

Naxsi version 0.45 is included with nginx-naxsi 1.1.19

You have used nx_util intended for naxsi version 0.50.

Yes, nx_util will run just fine, it will read your error.log and generate white-list rules .... with a syntax that is compatible with naxsi version 0.50

Documentation that covers old versions of naxsi is hard to find.

But it's not unlikely that there are some minor difference between the wl-rule syntax in naxsi v0.45 and v0.50 o.

If you tried to use a white-list tool for naxsi version 0.45 it will be possible to confirm or exclude version differences as source of the error.