Download the latest version of BLCMM from the official GitHub.

A: Game updates often change the executable file, breaking the hex edits that enable mods. In this case, you need to reapply the hex editing process using the Borderlands Hex Multitool or wait for updated versions of the modding tools. If none of the standard fixes work, you may need to wait for a solution from the modding community.

If you are still having trouble, the best course of action is to: you are using the latest version of BLCMM .

typically occurs when the tool cannot verify or interact with the game's executable file ( Borderlands2.exe BorderlandsPreSequel.exe

(specifically 64-bit for modern systems) to run correctly; without a proper installation, file selection can glitch. Steps to Fix the Error Use OpenBLCMM (Recommended)

If you are on the Epic Games Store version, try creating a dummy folder path that includes "steam" and copy your there to trick the tool into recognizing it. Use a Standalone Hex Multitool

If you are importing a mod that is corrupted, BLCMM will report it as an invalid file.

This issue typically occurs when BLCMM cannot locate the correct Borderlands2.exe file, the file path is unsupported, or the mod file itself is corrupted or in an incompatible format. This guide will provide step-by-step solutions to resolve this error and get your mods running. What Causes the "Invalid File Selected" Error?

However, one of the most frustrating roadblocks modders face is the dreaded error. This error usually pops up when you attempt to launch the software, select your game executable, or import a mod setup file.

Ensure you select or BorderlandsPreSequel.exe .

: State exactly what you clicked (e.g., "Tools > Setup game files" or "File > Open").

The "Invalid File Selected" error is a file handling exception. It usually stems from one of two distinct scenarios:

To do this:

If you are trying to mod Borderlands 2 or Borderlands: The Pre-Sequel , you have likely encountered the Borderlands Mod Manager (BLCMM). It is the gold standard tool for managing hex edits and executing .txt or .blcm mod files.