BuildFactory v(1.0.10) (direct download) contains some reasonably major bug fixes, some additional interface changes, as well as a few new features as well while we continue to ramp up for the 1.1 release. The 1.0.10 release is more of a feature-centric release, including the addition of support for adding additional Xcode variables via the BuildFactory inspector, the "Duplicate Selected" project menu option, and finally, pre- and post-building scripting. (A full changelog can be found here)
With the addition of pre-/post-build scripting it is possible to support other version control systems, as well as merge existing post-build scripts (or release-generation) scripts with an existing BuildFactory workflow. Details as to what data is passed to your scripts from BuildFactory can be gained by reading this blog post. It is also worth noting that pre-build scripts will block, i.e. pending builds will wait until the script is finished running in order to execute, meaning you can pack version control checkouts, and a large variety of pre-build necessities into the script. The post-build script however does not block, this is to improve post-build performance, as most pre-building scripts will perform actions requisite for the pending build, while post-build scripts should not do anything that should interfere with the next build. If you have a dual-core or multiple-processor machine, you'll be best benefitted by this extra bit of parallelism.
As per usual of course, please report bugs to the bug reporter so we can roll out fixes as soon as possible (in BuildFactory 1.0.11 or 1.1). Enjoy!