[2574] Invalid vendor error when upgraded from 1.0.0 to 1.1.0

I just upgraded nuxt from version 1.0.0 to 1.1.0 and am getting the following error when running either nuxt dev or nuxt build:

Error: Invalid vendor:vue-apollo,apollo-client,apollo-cache-inmemory

  - module.js:28 ModuleContainer.addVendor
    [corum]/[nuxt]/lib/core/module.js:28:13

  - index.js:27 ModuleContainer.nuxtApollo
    [corum]/[@nuxtjs]/apollo/index.js:27:8

  - module.js:150 Promise
    [corum]/[nuxt]/lib/core/module.js:150:30

  - new Promise

  - module.js:134 ModuleContainer.addModule
    [corum]/[nuxt]/lib/core/module.js:134:12

  - utils.js:96 promise.then
    [corum]/[nuxt]/lib/common/utils.js:96:43


  - next_tick.js:188 process._tickCallback
    internal/process/next_tick.js:188:7

  - module.js:686 Function.Module.runMain
    module.js:686:11

  - bootstrap_node.js:187 startup
    bootstrap_node.js:187:16

  - bootstrap_node.js:608
    bootstrap_node.js:608:3

From the stack trace, it looks like it could also be something to do with the nuxt Apollo module.

Could anyone tell me what this error means? I can't think of why this would happen when updating to a new minor release?