diff --git a/project.godot b/project.godot
index 225ff045304..62c02433798 100644
--- a/project.godot
+++ b/project.godot
@@ -42,7 +42,6 @@ Export="*res://src/Autoload/Export.gd"
 Palettes="*res://src/Autoload/Palettes.gd"
 Keychain="*res://addons/keychain/Keychain.gd"
 ExtensionsApi="*res://src/Autoload/ExtensionsAPI.gd"
-ErrorManager="*res://src/Autoload/ErrorManager.gd"
 
 [debug]
 
diff --git a/src/Autoload/ErrorManager.gd b/src/Autoload/ErrorManager.gd
deleted file mode 100644
index 619440bf85e..00000000000
--- a/src/Autoload/ErrorManager.gd
+++ /dev/null
@@ -1,108 +0,0 @@
-extends Node
-
-
-func parse(error: int, start := "", end := ""):
-	var message: String
-	match error:
-		OK:
-			message = "everything is fine"
-		FAILED:
-			message = "Generic error."
-		ERR_UNAVAILABLE:
-			message = "Unavailable error."
-		ERR_UNCONFIGURED:
-			message = "Unconfigured error."
-		ERR_UNAUTHORIZED:
-			message = "Unauthorized error."
-		ERR_PARAMETER_RANGE_ERROR:
-			message = "Parameter range error."
-		ERR_OUT_OF_MEMORY:
-			message = "Out of memory (OOM) error."
-		ERR_FILE_NOT_FOUND:
-			message = "File: Not found error."
-		ERR_FILE_BAD_DRIVE:
-			message = "File: Bad drive error."
-		ERR_FILE_BAD_PATH:
-			message = "File: Bad path error."
-		ERR_FILE_NO_PERMISSION:
-			message = "File: No permission error."
-		ERR_FILE_ALREADY_IN_USE:
-			message = "File: Already in use error."
-		ERR_FILE_CANT_OPEN:
-			message = "File: Can't open error."
-		ERR_FILE_CANT_WRITE:
-			message = "File: Can't write error."
-		ERR_FILE_CANT_READ:
-			message = "File: Can't read error."
-		ERR_FILE_UNRECOGNIZED:
-			message = "File: Unrecognized error."
-		ERR_FILE_CORRUPT:
-			message = "File: Corrupt error."
-		ERR_FILE_MISSING_DEPENDENCIES:
-			message = "File: Missing dependencies error."
-		ERR_FILE_EOF:
-			message = "File: End of file (EOF) error."
-		ERR_CANT_OPEN:
-			message = "Can't open error."
-		ERR_CANT_CREATE:
-			message = "Can't create error."
-		ERR_QUERY_FAILED:
-			message = "Query failed error."
-		ERR_ALREADY_IN_USE:
-			message = "Already in use error."
-		ERR_LOCKED:
-			message = "Locked error."
-		ERR_TIMEOUT:
-			message = "Timeout error."
-		ERR_CANT_CONNECT:
-			message = "Can't connect error."
-		ERR_CANT_RESOLVE:
-			message = "Can't resolve error."
-		ERR_CONNECTION_ERROR:
-			message = "Connection error."
-		ERR_CANT_ACQUIRE_RESOURCE:
-			message = "Can't acquire resource error."
-		ERR_CANT_FORK:
-			message = "Can't fork process error."
-		ERR_INVALID_DATA:
-			message = "Invalid data error."
-		ERR_INVALID_PARAMETER:
-			message = "Invalid parameter error."
-		ERR_ALREADY_EXISTS:
-			message = "Already exists error."
-		ERR_DOES_NOT_EXIST:
-			message = "Does not exist error."
-		ERR_DATABASE_CANT_READ:
-			message = "Database: Read error."
-		ERR_DATABASE_CANT_WRITE:
-			message = "Database: Write error."
-		ERR_COMPILATION_FAILED:
-			message = "Compilation failed error."
-		ERR_METHOD_NOT_FOUND:
-			message = "Method not found error."
-		ERR_LINK_FAILED:
-			message = "Linking failed error."
-		ERR_SCRIPT_FAILED:
-			message = "Script failed error."
-		ERR_CYCLIC_LINK:
-			message = "Cycling link (import cycle) error."
-		ERR_INVALID_DECLARATION:
-			message = "Invalid declaration error."
-		ERR_DUPLICATE_SYMBOL:
-			message = "Duplicate symbol error."
-		ERR_PARSE_ERROR:
-			message = "Parse error."
-		ERR_BUSY:
-			message = "Busy error."
-		ERR_SKIP:
-			message = "Skip error."
-		ERR_HELP:
-			message = "Help error."
-		ERR_BUG:
-			message = "Bug error."
-		ERR_PRINTER_ON_FIRE:
-# gdlint: ignore=max-line-length
-			message = "Printer on fire error. (This is an easter egg, no engine methods return this error code.)"
-		_:
-			message = "Unknown error"
-	return str(start, message, end)
diff --git a/src/Autoload/Export.gd b/src/Autoload/Export.gd
index 35c2fe621df..68973465f40 100644
--- a/src/Autoload/Export.gd
+++ b/src/Autoload/Export.gd
@@ -262,10 +262,7 @@ func export_processed_images(
 				var err := processed_images[i].save_png(export_paths[i])
 				if err != OK:
 					Global.error_dialog.set_text(
-						(
-							tr("File failed to save. Error code %s")
-							% str(err, ErrorManager.parse(err, " (", ")"))
-						)
+						tr("File failed to save. Error code %s (%s)") % [err, error_string(err)]
 					)
 					Global.error_dialog.popup_centered()
 					Global.dialog_open(true)
diff --git a/src/Autoload/OpenSave.gd b/src/Autoload/OpenSave.gd
index 7d9b3c9b3b6..97fe615bc9a 100644
--- a/src/Autoload/OpenSave.gd
+++ b/src/Autoload/OpenSave.gd
@@ -118,11 +118,10 @@ func open_pxo_file(path: String, untitled_backup: bool = false, replace_empty: b
 	var err := FileAccess.get_open_error()
 	if err != OK:
 		Global.error_dialog.set_text(
-			tr("File failed to open. Error code %s") % str(err, ErrorManager.parse(err, " (", ")"))
+			tr("File failed to open. Error code %s (%s)") % [err, error_string(err)]
 		)
 		Global.error_dialog.popup_centered()
 		Global.dialog_open(true)
-		file.close()
 		return
 
 	var empty_project: bool = Global.current_project.is_empty() and replace_empty
@@ -395,7 +394,7 @@ func save_pxo_file(
 		if temp_path.is_valid_filename():
 			return
 		Global.error_dialog.set_text(
-			tr("File failed to save. Error code %s") % str(err, ErrorManager.parse(err, " (", ")"))
+			tr("File failed to save. Error code %s (%s)") % [err, error_string(err)]
 		)
 		Global.error_dialog.popup_centered()
 		Global.dialog_open(true)
diff --git a/src/Preferences/HandleExtensions.gd b/src/Preferences/HandleExtensions.gd
index eed5d5689d2..58f06120f82 100644
--- a/src/Preferences/HandleExtensions.gd
+++ b/src/Preferences/HandleExtensions.gd
@@ -142,7 +142,7 @@ func _add_extension(file_name: String) -> void:
 	var extension_config_file := FileAccess.open(extension_config_file_path, FileAccess.READ)
 	var err := FileAccess.get_open_error()
 	if err != OK:
-		print("Error loading config file: ", err, ErrorManager.parse(err, " (", ")"))
+		print("Error loading config file: ", err, " (", error_string(err), ")")
 		extension_config_file.close()
 		return