I always appreciate any and all help members give me when requesting help. I did read that wiki. However, it doesn't answer my questions. The page does state: The Merge button typically should be chosen when installing optional files that are add-ons to the mod. This simply adds the files to the existing mod, overwriting any existing files However, this particular scenario I asked about doesn't correlate to this. The optional file is NOT for the main mod, it is a patch for a different mod. Does that mean I should follow the same logic? I guess my two questions are: 1. If I download (Tobes Highres Textures 1_2 1024 main file and the Tobes Highres Textures 1_2b SMIM Patch) aligned with STEP core; when installing both (main and SMIM patch) they default to install with the same name. In this particular case: would I merge, or would i have the SMIM patch installed under a different name? Remember the main mod is Tobes Hires.... and the optional is a patch for a different mod, not the main mod. 2. Why would a main file and an optional file try to install with the same mod name? Is that because of a configuration from the mod author which caused the mod manager (MO) to interpret the mod name given? (because I like to understand how things work, not just know what to click and what to type and what to hide...)