How To Fix Runtime Errors in GameMaker

Is your game crashing? Let's look at some common errors you can get in your GameMaker games, and fix them.

Debugger video:    • How to FIX BUGS! - GameMaker Debugger  

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Chapters:
00:00 Introduction
00:23 Variable not set before reading it
01:51 Unable to find instance of an object
02:51 DoAdd execution error
03:22 Argument incorrect type (Type) expected (Type)
04:17 Variable index out of range (arrays)
04:46 How to fix errors with output log
05:19 How to use the debugger