Hello bassistas,
Unfortunately, if the frame.zip is corrupted, it wouldn't be possible to restore the original project completely. But some processing results can be restored, you can try doing that by creating and saving a new empty project with the single chunk and then editing doc.xml in its frame.zip archive in order to include the links to the processing results that you would like to see (it would be also required to copied the related folders with all their contents to the new project.files/0/0 directory):
<dense_cloud path="dense_cloud/dense_cloud.zip"/>
<model path="model/model.zip"/>
and etc.