conflicting libpng versions

[pixie666]

Thanks for your reply
I' m pretty confused at the moment; I thought the libpng 1.2... version was installed by vdrift, but I guess I' m wrong?
In the slackware /var/log/packages I only see the libpng 1.4... version.
I removed it and try to reinstall vdrift. I first removed all possible vdrift packages such as ~/.vdrift, /usr/bin vdrift, etc. and then did the scons install again, but then I got this:
scons: `vdrift' is up to date.
scons: done building targets.
Did i overlook any config file?

Maybe I' m stupid, but I 'm pretty lost here