ID:1489816
 
(See the best response by Kaiochao.)
I keep getting errors saying my indentations are wrong.
Best response
When you copy/paste code from the forums or other places, the tabs may have been replaced with spaces. You can't mix tabs with spaces, but you can use Ctrl+H to fix it pretty quickly.

I use a tab size of 4 spaces (the default size) for DM.
A good tip to spot these issues, is to use Ctrl+T to turn on the tab indicator. It will show you where the tabs are, and where the spaces are.