UBOAT updated it's Unity engine version and pair it with the fact the UABE has not been updated in years, it's no wonder you cannot open any file. It's why stopped I using it and moved to using Unity and the Unity mod template.

I know off no alternative. What do you want to do, anyway?

Thats bad news. I want to make some skins & interrior shanges of the subs.
I never even get to lern how to open Unity it is to time consuming and just enying to get started.

引用自 Ctbb.：

Thats bad news. I want to make some skins & interrior shanges of the subs.
I never even get to lern how to open Unity it is to time consuming and just enying to get started.

It is not time consuming at all, it's surprisngly simple. Can be learned and set-up in a day. There are a few guides and people that can help you.

https://uboat.fandom.com/wiki/Modding/Tutorial/Setting_Up_Unity_Project:_In_Depth
https://uboat.fandom.com/wiki/Modding/Tutorial/Replacing_Texture_or_UI_Sprite

All you have to do is ask.

Thanks for your support i will maybe look in to it again.

You might want to try out AssetRipper

引用自 R3dShift：

You might want to try out AssetRipper

Thank You very mutch sir. This looks promising! it opens the files just need to se how to operate this Thanks A Bunch!

I was just trying to install Unity coudent even get that damn Code you need its just complete BullCrapp and it makes me whana throw my whole computer in the Trash...

But now maybe im on a roll again who-ho!!

Glad to be of some help, you should be able to extract everything with this tool