when we try to open the wood box on the minicopter we get an error Couldn't find prefab assets/bundled/prefabs/ui/lootpanels/lootpanel.genericlarge.prefab 

This is caused by the Rust update. I released an updated to the plugin yesterday to fix. Did you download the update? If you did not update on time, you may have to destroy that particular box. Let me know whether the issues goes away automatically for existing boxes when you update the plugin. If it does not, then I can release an improvement to automatically fix containers that were already spawned.

i did download the udpate, didn't realize it would not apply to existing minicopters

Gotcha, I'll see if I can fix that so nobody else runs into the issue.

Edit: Just pushed. Thanks for the report!