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Thanks. I put together a minimal reproduction of this:

<https://gist.github.com/jen20/55038870ab0293bcb0bb964f365e3557>

<@UB3BGTV63> FWIW I think your assessment is correct about the shape of `tags` and `tagsCollection` being confused somewhere. I have a state which is producing a crash on every refresh expecting a map, where the state value is an array.

I believe <https://github.com/pulumi/pulumi-aws/pull/296> will fix this, though it partly just works around a deeper problem.

<@UB8A66MPS> Can you try that out and let me know if you are still seeing any problems here?

<@UB3BGTV63> Is the way to test it to clone `pulumi-aws`, `make` and then `npm link` the resulting package?

Yes - though I believe you actually have to do `yarn link` since we use `yarn` in the `pulumi-aws` build, and `yarn` and `npm` I believe use separate link systems.

(we'll get this merged into master soon as well and then you can pick up a `dev` build)

:ok_hand:, just out with the dog for a few minutes, I’ll try shortly 