There are several bugs I found in the current version of NeoLemmix (V11.15.12:B770EBF):
1. The music at the crossover levels isn't the special music for these levels but just one of the regular musics of the Lemmings soundtrack.
Yes, this is because the corresponding music files are currently missing. Proxima sent them to me yesterday, so this bug will be fixed in the next update.
2. The hotkey layout has been changed so I can't assign an ability to a lemming using one of the function keys like in the original lemmings game.
When first starting a window "Welcome to NeoLemmix" should have appeared with the option to choose between hotkeys grouped by function and the traditional layout (with abilities on function keys). Did you get this?
Now, you have two choices:
- Change the hotkeys by yourself via "Options->Configure Hotkeys"
- Copy the attached file in the subfolder "settings" and replace the file currently there. This is exactly the hotkey layout that you would have gotten when choosing the traditional layout.
3. The game often pauses automatically, when I assign an ability to a lemming.
I cannot reproduce this on my computer, but suspect that you accidentally hit a pause or a backwards frameskip hotkey (or mouse button) with the unfamiliar hotkey layout.
Please update your hotkeys and see whether this bug still occurs.