Build mode problems

Hello,

Which platform are you playing on, and are you seeing any error codes or error messages? 

PS4 and no error codes. Stuff just stops working. Like when I place stairs, I can’t move or expand them. I can no longer place walls or go to live mode. Everything just stops working. I can’t even save.

Thanks, let's try the following to clear this up:

Turn off Your system completely, let it sit for a few minutes and power it back on.

Check that your game is fully updated:

• Go to the PlayStation home screen. 
• Highlight the game you're playing and press the Options button on your controller.
• Select "Check For Update" and install any updates that are available.
• Restart the Console completely.
  
  

Make sure your console system software is up to date. 

• Select Settings at the top of the PlayStation home screen.
• Choose "System Software Update" and allow any system updates to install.
• Reboot your PlayStation.

Uninstall and Reinstall the game:

• Go to Settings > Application Saved Data Management > Saved Data in System Storage > Delete.
• Select a game or application.
• Set check marks beside the data you wish to delete or Select All.
• Select Delete > then OK to confirm your decision.