A: This error typically indicates that BLCMM is unable to read, locate, or process the file you've attempted to use. While the exact wording may vary, it generally points to underlying issues such as missing Java, incorrect file paths, permission problems, or compatibility conflicts with your game version.
The text file is not saved in UTF-8 format, which BLCMM requires.
Mod files should typically be in .txt or .blcm formats. Attempting to open incompatible formats or corrupted downloads will trigger this error.
Simply replace the old BLCMM.jar or .exe file with the new one. Summary Table: Troubleshooting "Invalid File Selected" Potential Cause Ensure you are opening .blcm or .txt , not .zip . No "steam" in folder path Move/Rename game folder to include ...\Steam\Borderlands2 . Corrupt Mod File Redownload the mod from a trusted source. Hex Edit Failed Use Hex MultiTool to manually patch the .exe . Outdated BLCMM Download the latest BLCMM version. Still Having Trouble? blcmm invalid file selected
If your game is installed in a custom folder (e.g., D:\Games\Borderlands2 ), try renaming the parent folder to include "steam" (e.g., D:\Games\Steam\Borderlands2 ).
: Ensure you have the latest version of Java (64-bit is recommended for modern systems) installed. Verification Steps Open BLCMM and go to Tools > Setup game files for mods .
Did this error happen while or while loading a specific mod file ? Are you playing via Steam or the Epic Games Store ? A: This error typically indicates that BLCMM is
Borderlands Community Mod Manager (BLCMM) expects mod files in a specific format (XML-based .blcm or legacy .txt mods). If you select anything else – like a .sav , .exe , .zip , .dll , or a corrupted file – BLCMM shows this error.
For Borderlands: The Pre-Sequel , select BorderlandsPreSequel.exe . Standard Steam Installation Paths:
The "BLCMM Invalid File Selected" error is a common stumbling block for Borderlands 2 Mod files should typically be in
A: Yes. OpenBLCMM is completely separate from BLCMM and uses different data directories and configuration files. You can have both installed at the same time, and they will not interfere with each other.
Before we dive into the fix, it helps to understand what BLCMM is. BLCMM stands for the . It's the go-to tool for installing, managing, and customizing text-based mods for Borderlands 2 , Borderlands: The Pre-Sequel , and even the standalone Assault on Dragon Keep . It's essential for applying popular mods like the Unofficial Community Patch (UCP).
Alternatively, create a new folder named steam in your path, move your game files inside it, and re-set the path in BLCMM. 3. Run BLCMM as Administrator
👉 You’re trying to load a file that BLCMM doesn’t recognize as a valid mod file (wrong format, corrupted, or not a .blcm / .txt mod).
Re-open BLCMM, navigate back to the setup menu, re-check the boxes for , and click Apply .