Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
You should be using Ruby 2.2.4 if you are using OpenStudio 2.9.0, see the OpenStudio SDK Version Compatibility Matrix.
You'll also want to make sure that you're using 32-bit vs 64-bit consistently between the OpenStudio SDK and Ruby, otherwise it can give the above error.
