Problems with experimental Rust: i cant launch the game

Hi, today i was playing rust(legacy) and i just decided to take a look over the new experimental branch on rust, some few friends were playing on it so i decided to join them., the problem is that when i tried to run experimental, steam opened a window that was saying “unknown error”, i tried to run the game many times and i reinstalled rust, and checked the integrity of the cache, but it did not work
I run the game on WindowsXP,32 Bits…Normal rust runs fine, the problem is with the experimental branch
If anybody can help me, giving me a link or posting something helpfull i will really apreciate that!!! :smiley:

And as always, sorry for my english i am argentinian
Bye bye and thanks for reading the post!