[Julian]

I had problems with this mod too.

I had to install the mods manually using the copy and paste method.

For example: click on sim/units folder - it brings up a whole list of files.
High-lite all the files, then copy. Then go down and open your DESTROYER COMMAND folder in the Progran Files where you have it installed.
Find the sim/units folder and paste the high-lited files.
Follow this procedure for all the other folders.
It may take a while but it worked for me. Might still find some bugs.

First thing I did was create a new folder called "Kriegsmarine Mods".
Then I downloaded all the zip files to the folder.
Afterwards, I unzipped all the files back into the Kriegsmarine Mod folder to keep them all together.
Each unzipped file created its own folder name.
I matched and listed these names to the appropriate downloaded folders below.
Then I wrote down the order they would have to be installed.

Here is the list with the matching order to install.
1. Destroyer Command - original game
2. Patch1.1
3. PMDC1.03 - this one is optional - didn't work for me, program jammed up - so uninstalled it.
4. Vicker's mods etc.
5. sealords.zip - MOD SEA LORDS OF HORSE
6. belt-realism.zip - Mod of Realism in Beltz
7. unidades.zip - Pack unit
8. mission.zip - Pack of functions, text, messages and radio
9. bisbelt.zip - Bismark to the Beltz (optional)
10. otros.zip - Other archives
11.patch1.1.zip - Patch1.1
12.patch1.2.zip - patch1.2

See if this works out for you.