The build 287.5 is available as beta version. The update patch is available in the Download Links post in the "Support Forums / Product Owner's Lounge / Fusion 2.5" forum.
In case of problem you can reinstall the build 287.4 or any other version (no need to uninstall first, just reinstall the patch of the build you want to reinstall).
If any problem with this version, please post it in the bug box, do NOT post it in this forum otherwise the developers won't see it, thanks!
PS: the CF 2.5 patch updates all the installed exporters, you do not need to reinstall them.