A player just encountered an error that exists in 0.17 and only occurs in the third week if you wear the slutty outfit from 1987 NYC into the VR game world. I just patched it and am posting the hotfix here. Alternatively, there should be no problem clicking IGNORE on the error message and continuing on. You'll have a mild graphical discrepancy where Eva is still wearing the skirt for a moment instead of being naked, but it will self-correct quickly.
If you want to patch it, download the 0.17 --> 0.17b hotfix. Uncompress it and then copy the 4 files in the game folder into your Eva in Gloria Aeterna game folder. Overwrite the existing files and restart the game. If you did it correctly, the version number on the title screen should say 0.17b
All downloads, including the Android version have been updated to 0.17b, so if you are just downloading the game now, you don't need to worry about the hotfix.