MapEditor_2 cant open.

[Gamer Jole 1]

Hello,

I tried to make my own custom map but as I opened the MapEditor_2 Executable Jar File, it just wouldn't open or would make an error message (I linked the 2 also 1 is in German). I will list the following things I tried:

• Deleting the file and copying one from the example folder
• downloading jarfix (it just gets rid of the error message)
• downloading JDK Development Kit 23.0.1 (it just gets rid of the error message)
• trying to open it with javaw
• updating java
• deinstalling and reinstalling java
• done lots of stuff with cdm command 
• restarting my pc

I did eventually ask ChatGPT to help and it found out what was wrong, I will send what ChatGPT sent:

"Analysis:

1. NullPointerException: This indicates that a null value is being accessed where an object is expected. Specifically:

   • The java.util.List.get(int) method is returning null.
   • The returned null is being used to call getWidth() on an Image object.

2. Context in Code:

   • The issue occurs in the GamePanel class, specifically at line 395 in its constructor.
   • The problem propagates from the GamePanel initialization to the main class's init method at line 8 and its main method at line 13."

 

I also have the same layout of the folders like Lukasz in his video on custom maps (I also copied the example custom map folder). I can't fix this issue on my own so I'm asking for anyone to help me with this.

[Łukasz Jakowski 13,390]

You need to uninstall your current version of Java, then download the latest version and install it.

[Gamer Jole 1]

39 minutes ago, Łukasz Jakowski said:

You need to uninstall your current version of Java, then download the latest version and install it.

Hello Lukasz,

I tried uninstalling my current version of Java and downloading and installing the latest but it still isn't working, it still gives me the 2 error messages. Do you have any more tips?

[Gamer Jole 1]

I managed to fix it. I accidentally renamed the Template folder 😅 

Edited December 25, 2024 by Gamer Jole

[CzarnyJudasz 5]

I did exactly the same as Gamer Jole. Map Editor does not work and an error appears every time it is launched