Hi Jeff,
Once again, which version of 12.1 do you use ? There are several versions and service packs. If you are not running the latest release I would suggest to have a look at the Release Notes located here.
After a quick search I came across this :
Older object versions cannot be opened in the AWI Version Management (WEBUI-9220)
A problem has been fixed where trying to open old versions of objects in the Version Management page in the AWI resulted in an error with the following message: "Error during XRequest com.uc4.webui.communication.requests.OpenObjectAdapter." The same objects could be opened using the deprecated Java UI.
Components:
Fix
FiFixed versions:
- Automic.Web.Interface 12.2.0
- Automic.Web.Interface 12.1.3
Please update your AWI to v12.1.3 - no need to update other components. If the issue still persists then please get in touch with support.
Best regards,
Antoine