Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
This is not at all supported, and is strongly not discouraged, but if you open the "OSM" in a text editor you will see an "OS:Version" object. You can change the version to an older one and try to open it, but even if you didn't add any new objects, just the version translation to newer version of OpenStudio could have changed objects so that they won't open anymore in the older OpenStudio.
OS:Version,
{4804c508-91c8-4cc5-9813-cc5220711666}, !- Handle
1.12.1; !- Version Identifier
If you get errors about specific objects when you try to open the back versioned file remove the offending objects with a text editor and try again. If you ever attempt editing an OSM with a text editor keep an un edited copy of the file so if the hand edited copy gets messed up you will still have a clean copy, even if it is with a newer version of OpenStudio than you want.
To avoid this in the future, saving multiple copies of your model as your design progresses is recommended. Some users even use a version control system.
| | 2 | No.2 Revision |
This is not at all supported, and is strongly not discouraged, but if you open the "OSM" in a text editor you will see an "OS:Version" object. You can change the version to an older one and try to open it, but even if you didn't add any new objects, just the version translation to newer version of OpenStudio could have changed objects so that they won't open anymore in the older OpenStudio.
OS:Version,
{4804c508-91c8-4cc5-9813-cc5220711666}, !- Handle
1.12.1; !- Version Identifier
If you get errors about specific objects when you try to open the back versioned file remove the offending objects with a text editor and try again. If you ever attempt editing an OSM with a text editor keep an un edited copy of the file so if the hand edited copy gets messed up you will still have a clean copy, even if it is with a newer version of OpenStudio than you want.
To avoid this in the future, saving multiple copies of your model as your design progresses is recommended. Some users even use a version control system.
