The build 290.1 is available as beta version. Due to the changes, especially for the new "Named flags" feature, you should make backup copies of your MFA files before loading them with this version.
In case of problem you can reinstall 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, don't 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.