Error Messages/Reading Phase Aborted
The model file has been only partially loaded as a result of a user-abort. Be extra careful not to save this image over your existing model file, since doing so could result in a loss of portions of your model.
This message appears when you press Stop or Abort during the reading of a model file. This aborts the reading, and returns with only a portion of your model file loaded into memory.
The warning appears because this puts you in a dangerous situation. If you were to select File → Save, you would end up overwriting your original model file with the incomplete portion of your model that you've loaded into memory.
If you press Stop while loading a linked module file, you may want to delete the module object and start over with the Add Module... operation, to avoid wiping out your original linked module file.