Question-and-Answer Resource for the Building Energy Modeling Community
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The issue is almost certainly that IDF Editor is expecting a shorter object (fewer fields) than what OpenStudio has produced. EnergyPlus will still run fine, but you'll need to make some changes to the Energy+.idd file (in the directory where you installed EnergyPlus) in order for IDF Editor to accept your model. See the answer to this question for the details on that: How do I fix IDF Editor "too many fields" error?
