no-one can help without the error details. Start with Basic Troubleshooting to find out the details.
If you install new versions of add on features, you need to make sure they are compatible with the version of mojoportal you are using. Typically if you install the latest version of an add on feature it requires the latest version of mojoportal. My guess is you installed a newer version of the add on and you need to upgrade to the latest mojoportal to make it compatible.