Relaunch BLCMM and try selecting the executable again from this new path. 2. Manual Hex Editing (For Modern Updates)
Version compatibility is critical. If you are running BLCMM version 1.x and trying to open a mod built with version 2.x (or vice versa), the schema may have changed. The current standard is .
Right-click your BLCMM.exe application, select , go to the Compatibility tab, and check Run this program as an administrator . 4. Game Update and Version Mismatch
If BLCMM accepts your path but throws an invalid error specifically when trying to apply the text-mod hex edits, you need an external tool to decouple the tasks. Keep BLCMM closed for a moment.
Save your final combined .txt patch in the Borderlands 2\Binaries folder, not in the same folder as the .exe .
BLCMM historically requires the word "steam" to appear somewhere in the file path to the game directory.
Download the latest version of BLCMM from the official Github page. Alternative Solutions (If BLCMM Still Fails)
Here is a comprehensive guide to troubleshooting and fixing the "BLCMM invalid file selected" error. 1. Verify File Format and Source
Ensure you are downloading directly from authorized sources (like the Python SDK site or Nexus Mods). Checklist for Successful BLCMM Operations
Here is a short story about a vault hunter facing this digital glitch. 0;92;0;a1; 0;ea;0;78;0;1ba;
The error "invalid file selected" is a catch-all response. It means that the file you attempted to open does not match the expected schema, the file header is corrupted, or the file extension is misleading. In essence, BLCMM looked inside the file and found data it could not parse.
Remember: The Borderlands modding community is robust and helpful. If you still encounter issues after trying these steps, visit the or the Nexus Mods forums . Provide them with the exact file name, the size of the file, and your BLCMM version number as seen in the title bar.
The Epic Games versions of the software have different file structures and digital rights management (DRM) compared to Steam, which confuses older versions of BLCMM.
When importing mods, follow this correct procedure:
Here's how to use it:
: BLCMM requires a specific Java environment to function correctly. Are you using the Steam or Epic Games version of the game?