Helo, folks. First of all, forgive me for my English, it's not my mother language.
My name is Daniel and I'm being severly beaten by TESCS while trying to make a plugin to an .esp mod - namely the 'Vampire Hunting - Order of Virtuous Blood'. I know that TESCS doesn't allow it and I tried using Wrye to esmify the file or copying as an .esm, but it didn't worked - it still crashes when I'm trying to save my patch as fast as a blink. What else can I do? The oddity is that I tried it with another mod, with less modifications.
Please help me, , you're my only hope!
Thanks in advance!

http://www.tesnexus.com/downloads/file.php?id=8665 will get the job done.

No, don't use TES4Gecko. Based on what you describe, it sounds like you're trying to make one ESP dependant on another ESP, but the CS crashes each time you try to save. This is due to a bug in the CS, where any ESP dependant upon another ESP has to contain the Tamriel worldspace record to be saved. So you must edit the Tamriel worldspace, then you'll be able to save your new ESP.

Use Wrye Bash to ESMify the ESP you wish to use as master to your own ESP.
Now launch the CS and load the ESMified ESP.
If you already have an ESP you wish to make dependant on the Vampire Hunting ESP, then activate that ESP now. Otherwise just start a new ESP.
Make an edit in the Tamriel worldspace (any edit at all. Drop a rock into the ocean in cell -50,-18 or something).
Now you'll be able to save your new ESP, and can start making the edits you actually want to make.
When you want to test in-game, ESPify the Vampire Hunting ESP again, but when you want to make further edits in the CS, ESMify the Vampire Hunting ESP, otherwise you'll break your patch.