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The most complete tool for modding, decompiling and unpacking Undertale (and other Game Maker: Studio games!)

Results 471 UndertaleModTool issues
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### Which component should be improved? UI/UX ### Describe your feature suggestion in more detail Code editor shouldn't decompile code if the code wasn't changed since you switched out from...

enhancement
gui

UTMT will blindly attempt to read lang/lang_en.json for any game, not just Deltarune At the very least allow decompilation to continue without resolving strings

bug

UndertaleModTool 0.4.0.0-pre2 freezes trying to load 'data.win' of Stealth Bastard Deluxe: ![image](https://user-images.githubusercontent.com/8591462/124654423-d08c8080-de9e-11eb-8593-46d9abea32c0.png) ... not exactly "freezing" but keeps processing the file forever stuck like in picture.

bug
game loading error

### Describe the bug Trying to open the data.win for TetherGeist's demo triggers this lengthy error message: ![tether](https://github.com/user-attachments/assets/1206c919-1490-4dd5-91f8-685eca190d41) This error message is triggered on 0.6.1.0, the Dec. 2 Bleeding Edge...

bug
game loading error

### Describe the bug ![image](https://github.com/user-attachments/assets/58a659a9-f871-41ec-8166-94fb6538073e) each time i try to open a data.win file i get this error, help? ### Reproducing steps i opened the DATA.win of default dan 1.85.1...

bug
game loading error

### Which component should be improved? UI/UX ### Describe your feature suggestion in more detail Marking this for GMS1 specifically, as GMS2 already has its own room editorish with CST's...

enhancement
gui

### Which component should be improved? UI/UX ### Describe your feature suggestion in more detail The current workflow doesn't allow one to easily use source control. You either: - make...

enhancement

## Description A big step towards fixing https://github.com/krzys-h/UndertaleModTool/issues/1466. ### Caveats This is unfinished! Also, I forgot to correctly format the code before i pushed it! ### Notes Do tell me...

> another thing : i always think why don't make auto backup and search a built-in thing instead of a script?

### Which component should be improved? UI/UX ### Describe your feature suggestion in more detail We should be able to right-click on any item in the editor and have an...

enhancement