I just tried both Netsuft and OWB 1.3.
Netsurf loaded ok. Then I tried OWB. OWB complained about it needed ixemul.library 48.x or newer.
I was then a bit puzzled, since my version reported as 61.1
After reading this, I downloaded the required 48.x version. But then the updating program installed the updates up to 1.5.9, and I noticed that the 48.3 libs was mentioned in one of the packages.
But after that OWB now says it nees the 3.9 boingbag 2 (exec V45). I tried to reinstall boingbag 2, but still the same message.
Then I wanted to try Netsurf again, but now also that refuse to run. It say it needs ixemul 61.1 or better.
I found why this happens though. The 61.1 libs are incuded in the recent Netsurf archive, so when installing Netsurf it will replace the 48.x libraries.
So it seemes that Netsurt and OWB dont like to be on the same machine.
So what I done now is to be able to run both, I reinstalled Amikit 1.5.0 and boingbag 2 for OS39. (I'm using AmigaOSXL as source). Then extracted the OWB and NetSurf archives (but not installing Netsurf, because that will replace the 48.x libraries). Then I made a script that will assign the libs to the Netsurf/libs drawer. Next line I just assign the sys:libs with the ADD option so that it will look in the netsurf/libs drawer first.
Offcourse a reebot will be needed between running OWB after Netsurf or the other way around.