In the k-meleon_nu2menu.xml file, there are two references to k-meleon.cmd - but these should actually be k-meleon.exe. Otherwise, the start menu item for it gets greyed out.
Also, just as an FYI, the 800x600 8-bit, 16-bit, and 24-bit entries in the screen res list are missing the "X" between the 800 and 600.
Not sure if either of these issues were in the 2.5 build.
- 0V