Hi Tony,
Very early in the Platinum life cycle we addressed an issue where bouncing to clips would produce a clip with no name. Now clips keep their original name when bounced. To determine if a clip currently has a region effect on it, look for the RFX indicator on the top RH corner.
We are currently looking into the issue with Ivory and other synths where the output is distorted when 64 bit double precision is enabled. We would like to address this as soon as possible. In the meantime you can disable this option in Preferences - Audio - Driver Settings.
Basically 64 bit DP allows the synth and other plugins that support this to pass through full 64 bit audio. There are some headroom benefits to this setting, however fidelity and quality should not be different. You would get more fidelity benefit from using the Upsample on Playback or Upsample on Render options on the plugin UI (top LH corner windows menu).