it happens sometimes when my new member just load a project with new version, after working for some tasks they commit back to server T_T.
I normally do like this:
- Create a new folder to store the repository contents
- Right lick and select SVN Checkout
- enter url (https://temserver.sprint.com/<app_id>/trunk/trunk) and you may see the previous version
then use mendix studio pro open this folder again.
hope this help
Not sure but a thought which might help
1. Delete the whole folder of your local file
2. Open studio pro 8.12.1
3. Open project again