DeMignon: Just to clarify, you installed it the right way:
TeamX states the following:
Fallout v.1.3.5 patch by TeamX (unofficial)
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Installation
Attention!
This patch requires Fallout version 1.2! If you own the different version of the game, upgrade to 1.2 first. The necessary update (semi-official Fallout v.1.2 patch) can be found at www.teamx.ru.
Copy the compressed patch file into the directory that Fallout is installed to.
Decompress the patch using a file decompression program such as UnRAR or WinRAR version 3.30+.
Extract the files using the option to include subdirectories.
Answer 'Yes' when prompted to overwrite existing files.
After the files have been decompressed, you can delete patch archive from your Fallout directory.
Source:
http://www.nma-fallout.com/forum/dload.php?action=file&file_id=1075 Yeah, word for word that's what I did.