I'm the maintainer of the SlackBuild. I'm afraid I didn't get any emails about it
I stopped using openerp a while back so if you actively use it I'm happy to let you take over maintainership. I looked briefly at newer versions, but the dependency chain changed dramatically and there are quite some new deps that are not yet on Slackbuilds.org. I didn't have the motivation to add SlackBuilds for all of them so that's why there hasn't been an update in a while.
As for the process on how to take over, please send a tarball of the SlackBuild(s) with the updated maintainer information (only the updated maintainer information please, you can submit version updates later when submissions are open again) either to me or to the mailing list mentioned before.