Reproduction steps:
1. Open the attached project;
2. Delete 5 and 7 lines in the script "SinnesterSpawnPattern.cs";
3. Build the project on Android platform;
4. After the error shows, return to the script and return deleted lines;
5. Go to Build Settings window;

Actual result: after the errors are repaired, the button to download Android module shows up in the Build settings window, although Android module was installed.
Expected result: the project should built.

Reproduced with: 5.6.0b1, 5.6.0b4
Not reproducible with: 5.6.0a1

Cannot be tested with older than 5.6 versions because of the errors.