I have Visual Composer 5.0 and Types (latest), this works fine together.
Then I activate the SEO Plugin and can not add any blocks anymore.
Several JS errors happen in the console.
When I disable Types half the issues are gone.
It means, there are still fatal JS errors, coming from the SEO plugin, but the issue that you can not add or edit the block is gone.
Now, the issue can be due to the fatal JS error happening on SEO/Visual Composer.
Sure is, Types and Visual Composer together work just fine.
As soon we bring in SEO, JS errors happen.
Without SEO, no JS errors at all happen.
So I would suggest to contact the SEO Plugin authors because the JS errors are related to that Plugin.
If then the issue still happens, we will try to fix eventually on our part as well, but I can not spot errors coming from Types, instead I see errors from the SEO plugin making it impossible for the plugins to work together.
We are open to work together as well, and I will inform our Developers on this issue here too, so we can already have a look at this.