Does loading and saving right away result in a crash when loading, or do you need to move, complete a quest, etc, before this will be a problem?

Can you load earlier saves, and create new saves that load properly?

You can not directly upload saves to the forum, but if you zip the save folder you can upload it to Dropbox or Google drive, etc, and post a link. Alternately, you can email the save/link to support@larian.com.
In Windows Explorer you can zip a file or folder by right clicking on it/them and selecting 'Send To | Compressed (zipped) Folder'.