Unity Cloud Build: Error: Unrecognized Project - unity3d

Question

This is my first time using Unity Cloud Build. I'm using BitBucket with SourceTree, I've also tried it with GitHub, but I keep getting the same error:
Error: unrecognized project! Please check your app configuration - if this is a Unity application, We expect your "Project Subdirectory" to be set to the path which directly contains the ProjectSettings and Assets directories. For a native app, this should be set to the path which directly contains the project file (.xcodeproj, project.properties, etc).
The project itself is simple, just one 3d character model and a basic walk animation just to make sure things were at a minimum. If anyone could help that would be great!
Here is the full log.
1: Running Prebuild steps
2: Removing bvr
3: Successfully uninstalled bvr-1.2.11
4: 1 gem installed
5: done.
6: bvr 1.2.12
7: bvr-api 0.2.4
8: Cloning the remote Git repository
9: Cloning repository ssh://git#bitbucket.org/jsmccloud/gm_animation_test.git
10: Fetching upstream changes from ssh://git#bitbucket.org/jsmccloud/gm_animation_test.git
11: Fetching upstream changes from ssh://git#bitbucket.org/jsmccloud/gm_animation_test.git
12: Checking out Revision d84217f8e82b1bedcd64256ae88a38b9226beb9b (refs/remotes/origin/master)
13: First time build. Skipping changelog.
14: Calculated Workspace Size: 308.73 MiB
15: PATH | SIZE
16: /GM_Animation_Test | 308.73 MiB
17: postcheckoutstatus finished successfully.
18: Error: unrecognized project! Please check your app configuration - if this is a Unity application, We expect your "Project Subdirectory" to be set to the path which directly contains the ProjectSettings and Assets directories. For a native app, this should be set to the path which directly contains the project file (.xcodeproj, project.properties, etc).
19: Build step 'Execute shell' marked build as failure
20: postbuildstatus finished successfully.
21: Finished: FAILURE

Answer 1

This is how I fixed the problem:
In my Unity project I set the following settings:
Under Edit>Project Settings>Editor
Set Version Control Mode to Visible Meta Files
Set Asset Serialization Mode to Force Text
Save project and close Unity. Apparently, leaving Unity open when I copy my files over to my repo directory had caused problems.
Everything seems to work fine now.